Add binderLibTest_IPC_32

1) Add product_variables to binderLibTest because the test case
   CheckHandleZeroBinderHighBitsZeroCookie uses binder data structure.
2) Add binderLibTest_IPC_32 which always compiles the test program for
   32-bit binder.

Bug: 63307240
Bug: 62366937
Test: vts-tradefed run commandAndExit vts -m VtsKernelBinderTest
Merged-In: I40c738a039459fbfece9689012249ae7ea93df9d
Change-Id: I40c738a039459fbfece9689012249ae7ea93df9d
(cherry picked from commit f6edfc1b096cba544227d85b0ea3f38a4dd11af5)
(cherry picked from commit 75be4a10008a846c74bc30652584b280669c3b85)
1 file changed