Update submodules

Use local copies of submodule repositories.

Change-Id: I54505c1dea387440eefee05ff0733f9420edf563
diff --git a/.gitmodules b/.gitmodules
index ca323b4..3a3ea3b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,36 +1,6 @@
-[submodule "roms/vgabios"]
-	path = roms/vgabios
-	url = git://git.qemu-project.org/vgabios.git/
-[submodule "roms/seabios"]
-	path = roms/seabios
-	url = git://git.qemu-project.org/seabios.git/
-[submodule "roms/SLOF"]
-	path = roms/SLOF
-	url = git://git.qemu-project.org/SLOF.git
-[submodule "roms/ipxe"]
-	path = roms/ipxe
-	url = git://git.qemu-project.org/ipxe.git
-[submodule "roms/openbios"]
-	path = roms/openbios
-	url = git://git.qemu-project.org/openbios.git
-[submodule "roms/openhackware"]
-	path = roms/openhackware
-	url = git://git.qemu-project.org/openhackware.git
-[submodule "roms/qemu-palcode"]
-	path = roms/qemu-palcode
-	url = git://github.com/rth7680/qemu-palcode.git
-[submodule "roms/sgabios"]
-	path = roms/sgabios
-	url = git://git.qemu-project.org/sgabios.git
 [submodule "pixman"]
 	path = pixman
-	url = git://anongit.freedesktop.org/pixman
+	url = https://fuchsia.googlesource.com/third_party/pixman
 [submodule "dtc"]
 	path = dtc
-	url = git://git.qemu-project.org/dtc.git
-[submodule "roms/u-boot"]
-	path = roms/u-boot
-	url = git://git.qemu-project.org/u-boot.git
-[submodule "roms/skiboot"]
-	path = roms/skiboot
-	url = git://git.qemu.org/skiboot.git
+	url = https://fuchsia.googlesource.com/third_party/dtc
diff --git a/dtc b/dtc
index 65cc4d2..f888654 160000
--- a/dtc
+++ b/dtc
@@ -1 +1 @@
-Subproject commit 65cc4d2748a2c2e6f27f1cf39e07a5dbabd80ebf
+Subproject commit f88865469b65455bdc4ebe7ad8601fafea9b8ef3
diff --git a/pixman b/pixman
index 87eea99..10bd2b8 160000
--- a/pixman
+++ b/pixman
@@ -1 +1 @@
-Subproject commit 87eea99e443b389c978cf37efc52788bf03a0ee0
+Subproject commit 10bd2b8dc05853cc0d9d6abbb1cda223091e5aa4
diff --git a/roms/SLOF b/roms/SLOF
deleted file mode 160000
index efd65f4..0000000
--- a/roms/SLOF
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit efd65f49929d7db775b26066d538c8120ae3db94
diff --git a/roms/ipxe b/roms/ipxe
deleted file mode 160000
index b991c67..0000000
--- a/roms/ipxe
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit b991c67c1d91574ef22336cc3a5944d1e63230c9
diff --git a/roms/openbios b/roms/openbios
deleted file mode 160000
index ef8a14e..0000000
--- a/roms/openbios
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit ef8a14e8afb47635c9c5f7524a52c3251827e296
diff --git a/roms/openhackware b/roms/openhackware
deleted file mode 160000
index c559da7..0000000
--- a/roms/openhackware
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit c559da7c8eec5e45ef1f67978827af6f0b9546f5
diff --git a/roms/qemu-palcode b/roms/qemu-palcode
deleted file mode 160000
index f3c7e44..0000000
--- a/roms/qemu-palcode
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit f3c7e44c70254975df2a00af39701eafbac4d471
diff --git a/roms/seabios b/roms/seabios
deleted file mode 160000
index 8891697..0000000
--- a/roms/seabios
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 8891697e3f7d84355420573efd98e94f14736768
diff --git a/roms/sgabios b/roms/sgabios
deleted file mode 160000
index 23d4749..0000000
--- a/roms/sgabios
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 23d474943dcd55d0550a3d20b3d30e9040a4f15b
diff --git a/roms/skiboot b/roms/skiboot
deleted file mode 160000
index 762d008..0000000
--- a/roms/skiboot
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 762d0082f18e4fb921a2d44a1051b02d8b0f6381
diff --git a/roms/u-boot b/roms/u-boot
deleted file mode 160000
index 2072e72..0000000
--- a/roms/u-boot
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 2072e7262965bb48d7fffb1e283101e6ed8b21a8
diff --git a/roms/vgabios b/roms/vgabios
deleted file mode 160000
index 19ea12c..0000000
--- a/roms/vgabios
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 19ea12c230ded95928ecaef0db47a82231c2e485