In function ‘gfx_v9_0_check_fw_write_wait’:
warning: enumeration value ‘CHIP_TAHITI’ not handled in switch [-Wswitch]

Always add default case in case there is no match
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>