Fix the coverity warning
mixed_enum_type: enumerated type mixed with another type

We are passing an enum in the xiic_wakeup lets change
the function parameters to reflect that.
Signed-off-by: NShubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Acked-by: NMichal Simek <michal.simek@amd.com>
[wsa: fixed $subject with proper prefix]
Signed-off-by: NWolfram Sang <wsa@kernel.org>