Add toolchain/pgo-profiles to the 'pdk' group

Bug: http://b/72966977

Test: /google/data/ro/projects/android/android-build/validate_repo_branch.par
        --branch=current-manifest --local_manifest ./default.xml

Change-Id: Iaa3f6bea2796f3552734667c43002cbfe960b8be
Merged-In: Iaa3f6bea2796f3552734667c43002cbfe960b8be

default.xml

@@ -666,7 +666,7 @@
   <project path="test/sts" name="platform/test/sts" groups="sts,pdk" />
   <project path="toolchain/benchmark" name="toolchain/benchmark" />
   <project path="toolchain/binutils" name="toolchain/binutils" />
-  <project path="toolchain/pgo-profiles" name="toolchain/pgo-profiles" />
+  <project path="toolchain/pgo-profiles" name="toolchain/pgo-profiles" groups="pdk" />
   <project path="tools/acloud" name="platform/tools/acloud" groups="tools,vts,pdk,tradefed" />
   <project path="tools/adt/idea" name="platform/tools/adt/idea" groups="notdefault,tools" />
   <project path="tools/apksig" name="platform/tools/apksig" groups="pdk,tradefed" />