soc: qcom: pil: Enable PIL modem clock after modem restart on MSM8953

PIL modem reset on msm8953 cause clock to be disabled. Then operation
on involved register is not valid. So need to enable clock after
modem restart on MSM88953.

Change-Id: Ie3262322dbe31b9443b388ec7ea3218b769df3e0
Signed-off-by: Jingbiao Lu <jingbiao@codeaurora.org>