msm: kgsl: Print always on counters in gmu core snapshot

Print always on counters before collecting gmu core snapshot. This will
help to sync and analyze gmu traces with dmesg.

Change-Id: Icd2223662cce503f8d464592eb4f2307b519f015
Signed-off-by: Pankaj Gupta <gpankaj@codeaurora.org>