[V3 07/10] powerpc, lib: Add new branch instruction analysis support functions

Generic powerpc branch instruction analysis support added in the code patching library which will help the subsequent patch on SW based filtering of branch records in perf. This patch also converts and exports some of the existing local static functions through the header file to be used else

[V3 07/10] powerpc, lib: Add new branch instruction analysis support functions

Generic powerpc branch instruction analysis support added in the code patching library which will help the subsequent patch on SW based filtering of branch records in perf. This patch also converts and exports some of the existing local static functions through the header file to be used else