Fix gdb python support for Android platform debugging

GDB with python support looks for specfic set of locations for PYTHONHOME.
Add one more clue to find $ANDROID_BUILD_TOP/prebuilts/python/linux-x86/2.7.5
Note that ANDROID_BUILD_TOP is set by doing usual setup in Android development,
ie.

  . build/envsetup.sh
  lunch ...

Change-Id: Id75d6852e68af41480def264cb18a51b1e19ea86
diff --git a/bin/mipsel-linux-android-gdb b/bin/mipsel-linux-android-gdb
index 6443267..c00f5e2 100755
--- a/bin/mipsel-linux-android-gdb
+++ b/bin/mipsel-linux-android-gdb
Binary files differ