ASoC: wcd_cpe_services: Use proper enums

ASoC: wcd_cpe_services: Use proper enums

Clang warns:

../sound/soc/codecs/wcd_cpe_services.c:666:16: warning: implicit
conversion from enumeration type 'enum cpe_svc_event' to different
enumeration type 'enum cmi_api_event' [-Wenum-conversion]
        notif.event = CPE_SVC_CMI_MSG;
                    ~ ^~~~~~~~~~~~~~~
../sound/soc/codecs/wcd_cpe_services.c:1181:9: warning: implicit
conversion from enumeration type 'enum cpe_svc_result' to different
enumeration type 'enum cpe_process_result' [-Wenum-conversion]
        return CPE_SVC_SUCCESS;
        ~~~~~~ ^~~~~~~~~~~~~~~
2 warnings generated.

Fixes: 03f5d7efe220 ("ASoC: wcd: Add Audio codec drivers for MSM targets")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>