misc: hdcp: fix resetting repeater flag

Reset the repeater flag on every hdcp command execution
to avoid using obsolete repeater status.

CRs-Fixed: 2350350
Change-Id: Ie08329d58bba6bc69b2f47a6d86d617b0adab0f1
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>