applications: sdp: mspi: change opcode cast to uint32

Change cast of opcode in ep_recv function to uint32_t instead
of uint8_t.

Signed-off-by: Magdalena Pastula <magdalena.pastula@nordicsemi.no>

Author: magp-nordic

applications/sdp/mspi/src/main.c

@@ -423,7 +423,7 @@ static void ep_recv(const void *data, size_t len, void *priv)
 
 	(void)priv;
 	(void)len;
-	uint8_t opcode = *(uint8_t *)data;
+	uint32_t opcode = *(uint32_t *)data;
 	uint32_t num_bytes = 0;
 
 #if defined(CONFIG_SDP_MSPI_FAULT_TIMER)
@@ -545,7 +545,8 @@ static void ep_recv(const void *data, size_t len, void *priv)
 		break;
 	}
 
-	response_buffer[0] = opcode;
+	uint32_t* resp_buff = (uint32_t*)response_buffer;
+	resp_buff[0] = opcode;
 	ipc_service_send(&ep, (const void *)response_buffer,
 			 sizeof(nrfe_mspi_opcode_t) + num_bytes);