coresight: use ETMPDCR instead of ETMCR for ETM power/clock control
coresight: use ETMPDCR instead of ETMCR for ETM power/clock control

Use ETMPDCR instead of ETMCR for ETM power/clock enable/disable. ETMPDCR
doesn't have corresponding cp14 access and hence will help with subsequent
multicore ETM support changes for 8974. ETMPDCR is available for PFTv1.1
and ETMv3.5 compliant ETM implementations.

Change-Id: I4b190b963cda29b406971cf075db36213b140495
Signed-off-by: Pratik Patel <1acbbdd4274e187eda89cfa6ac00592dcfca8a01@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas