coresight: simplify etm_init_arch_data
coresight: simplify etm_init_arch_data

Move etm_arch_supported out of etm_init_arch_data to simplify the
init flow.

Signed-off-by: Pratik Patel <1acbbdd4274e187eda89cfa6ac00592dcfca8a01@codeaurora.org>
Change-Id: I8a95f59e35e74c5af8c447abdc9f0dcd1682bce1

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