Change return type of get_load_offset to bool.
Change return type of get_load_offset to bool.

Return boolean value to indicate success and return the offset via pointer.
Offset of 0 zero is valid if the elf file was not relocated.

Change-Id: Ia9c73673a4ecbdc1f21324b6e0f414d4daf8359d

SyndicateRogue/libunwind,SyndicateRogue/libunwind,zeldin/platform_external_libunwind,zeldin/platform_external_libunwind,zeldin/platform_external_libunwind,SyndicateRogue/libunwind