msm: kgsl: Configure IFPC perf counter in platform_setup

Currently ifpc counter is not enabled because gmu core is
disabled during probe.
This patch updates the check for configuring perfctr_ifpc_lo
during platform_setup.

Change-Id: Icebfba2bef89a6411f350c230b54d67f372de132
Signed-off-by: Pankaj Gupta <gpankaj@codeaurora.org>