[syscalls] Comment typo fixes.

TEST: No behavior change
Change-Id: I5e621a085b5eac631f2f1666bc260cefcbc34f3c
diff --git a/system/public/zircon/syscalls.abigen b/system/public/zircon/syscalls.abigen
index deceb73..5e67afd 100644
--- a/system/public/zircon/syscalls.abigen
+++ b/system/public/zircon/syscalls.abigen
@@ -17,9 +17,9 @@
 # [args] can be empty or is a comma separated list of
 # '<aname>: <type> [attributes] [ctr]'
 #
-# <aname> is the argument name. It must be a valid C indentifier.
+# <aname> is the argument name. It must be a valid C identifier.
 #
-# <type> is the argument type. It must be a valid C indentifer with an optional
+# <type> is the argument type. It must be a valid C identifier with an optional
 # array-spec which when present it must be "[number]" or "[aname]", with the
 # number being an integer and aname the name of the argument that controls the
 # array size.
diff --git a/system/public/zircon/syscalls/iommu.h b/system/public/zircon/syscalls/iommu.h
index e567175..5aad57a 100644
--- a/system/public/zircon/syscalls/iommu.h
+++ b/system/public/zircon/syscalls/iommu.h
@@ -44,7 +44,7 @@
     // ending with the device itself.
     // |dev_func[0]| is the address on |start_bus| of the first bridge in the
     // path (excluding the host bridge).  |dev_func[num_hops-1]| is the address
-    // of the the device itself.
+    // of the device itself.
     uint8_t dev_func[5];
 } zx_iommu_desc_intel_scope_t;