[armgcc] Update to 12.2.mpacbti-rel1

Change-Id: I9928ff69febb5f55449ec69e801d9a702a07ae25
Reviewed-on: https://fuchsia-review.googlesource.com/c/infra/3pp/+/825657
Fuchsia-Auto-Submit: Rob Mohr <mohrr@google.com>
Reviewed-by: Oliver Newman <olivernewman@google.com>
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
diff --git a/armgcc/fetch.py b/armgcc/fetch.py
index 2c60663..557b67d 100755
--- a/armgcc/fetch.py
+++ b/armgcc/fetch.py
@@ -14,7 +14,7 @@
 # Check for new versions at the following URL:
 # https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
 # Change this line when a new version is released.
-_VERSION = '12.2.rel1'
+_VERSION = '12.2.mpacbti-rel1'
 
 # Often this line needs to be changed with new versions as well.
 _URL = 'https://developer.arm.com/-/media/Files/downloads/gnu/{version}/binrel/arm-gnu-toolchain-{version}-{platform}-arm-none-eabi{ext}'