drm/i915/hdcp: Silence compiler critics

drivers/gpu/drm/i915/intel_hdcp.c:92 intel_hdcp2_capable() warn: inconsistent indenting
drivers/gpu/drm/i915/intel_hdcp.c:786:5: error: no previous prototype for ‘intel_hdcp_check_link’

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190221084833.19489-1-chris@chris-wilson.co.uk