staging: greybus: audio_codec.c: Prefer kernel type 'u32' over 'uint32_t'

Fix the following errors found by checkpatch.pl:
CHECK: Prefer kernel type 'u32' over 'uint32_t'

Signed-off-by: Kamal Heib <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/greybus/audio_codec.c

···
 	int module_state, ret = 0;
 	u16 data_cport, i2s_port, cportid;
 	u8 sig_bits, channels;
-	uint32_t format, rate;
+	u32 format, rate;
 	struct gbaudio_data_connection *data;
 	struct gbaudio_stream_params *params;
 
···
 	int module_state, ret = 0;
 	u16 data_cport, i2s_port, cportid;
 	u8 sig_bits, channels;
-	uint32_t format, rate;
+	u32 format, rate;
 	struct gbaudio_data_connection *data;
 	struct gbaudio_stream_params *params;
 
···
 {
 	int ret;
 	u8 sig_bits, channels;
-	uint32_t format, rate;
+	u32 format, rate;
 	struct gbaudio_module_info *module;
 	struct gbaudio_data_connection *data;
 	struct gb_bundle *bundle;