librpc: Reduce debug messages

Stop the logcat spam when gps is used

Change-Id: Ifb13637f45f24a5c6c3a4a3dfd1e87aeedb4f9c1
Signed-off-by: Michael Bestas <mikeioannina@gmail.com>
Merge remote-tracking branch 'cm/cm-10.2' into merge_cm
Filter out msm8974 board platform

Otherwise it builds dspcrashd which errors out. No other
qcom device builds this