misc: isa1200: Add support for clock enable

ISA1200 uses clock to generate pwm for vibration. Add
a callback api to control the clock.

CRs-fixed: 357656
Change-Id: Iac1d0cdb3ac950b7bbc2afbe3a92b0e0292e3811
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>
2 files changed