Update paths for the prebuilt GCC toolchains

Use the Arm and Linaro GCC toolchains uploaded for the pKVM
projects instead of the AOSP ones.

Signed-off-by: Fuad Tabba <tabba@google.com>
Change-Id: If6891880375bcfd00288d9370cd093450b28ab8e
diff --git a/default.xml b/default.xml
index b16d58a..888d834 100644
--- a/default.xml
+++ b/default.xml
@@ -13,6 +13,7 @@
   <project path="linux" name="linux" revision="pkvm" />
   <project path="misc" name="misc" />
   <project path="prebuilts" name="prebuilts" clone-depth="1" />
+  <project path="toolchains/linux-x86/gcc" name="toolchains/linux-x86/gcc" clone-depth="1" />
 
   <project path="toolchains/darwin-x86/clang"
            name="platform/prebuilts/clang/host/darwin-x86"
@@ -22,14 +23,6 @@
            name="platform/prebuilts/clang/host/linux-x86"
            remote="aosp" revision="master"
            clone-depth="1" />
-  <project path="toolchains/darwin-x86/gcc/aarch64-linux-android"
-           name="platform/prebuilts/gcc/darwin-x86/aarch64/aarch64-linux-android-4.9"
-           remote="aosp" revision="master"
-           clone-depth="1" />
-  <project path="toolchains/linux-x86/gcc/aarch64-linux-android"
-           name="platform/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9"
-           remote="aosp" revision="master"
-           clone-depth="1" />
   <project path="toolchains/darwin-x86/gdb"
            name="platform/prebuilts/gdb/darwin-x86"
            remote="aosp" revision="master"
@@ -38,5 +31,4 @@
            name="platform/prebuilts/gdb/linux-x86"
            remote="aosp" revision="master"
            clone-depth="1" />
-
 </manifest>