USB: gadget: Fix Code style error in ci13xxx_msm_hsic driver

Fix checkpatch and restricted keyword error for code changes which
introduces chipidea HSIC driver in 'commit d91dbe9b ("usb: gadget:
Add HSIC peripheral support.")'.

Change-Id: I81a13f00d55d5419d2ef3e4a5e01a30370dc6f44
Signed-off-by: Tarun Gupta <tarung@codeaurora.org>