hammerhead: Enable RPM master stats

This exports the power states of peripherals within the SoC via
debugfs.

Signed-off-by: Naveen Ramaraj <nramaraj@codeaurora.org>

arch/arm/configs/hammerhead_defconfig

@@ -59,6 +59,7 @@ CONFIG_MSM_PIL_VENUS=y
 # CONFIG_MSM_BUSPM_DEV is not set
 CONFIG_MSM_TZ_LOG=y
 CONFIG_MSM_RPM_RBCPR_STATS_V2_LOG=y
+CONFIG_MSM_RPM_STATS_LOG=y
 CONFIG_MSM_DIRECT_SCLK_ACCESS=y
 CONFIG_MSM_EVENT_TIMER=y
 CONFIG_MSM_BUS_SCALING=y