msm8974: Remove VECTORIMPL_SYMBOLS hack

 * Welcome to 1980 br0s

Change-Id: Iae3c2d4926c88740e3fd7282826623d9f263ab80
msm8974: Enable IZat

 * DO NOT MERGE, requires additional verification

Change-Id: I0a2906a3ada188571ad1ae1dfa543d3cd60fa3ed
msm8974: Use CAF RIL variant

 * Required for QCRIL CS release

Change-Id: If32ab99eaebbdf5f315d182444d2e572636e115c
msm8974: underp variant :(

Change-Id: I7d480f8b4288c87dfb411af7a0f90c5ae8799673