gca: Support searching inside Android.bp along Android.mk
gca: Support searching inside Android.bp along Android.mk

Change-Id: Ia5c99ecafb62f3cad0ac42b2f40fee7f432d1ac1
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools