char/tpm/tpm_i2c_stm_st33: Don't use memcpy for one byte assignment

We don't need to call memcpy for one byte, but assign it directly.
And to make the offset clearer we use the array syntax on the subsequent
call to memset to make the relationship clearer.
Signed-off-by: NPeter Huewe <peterhuewe@gmx.de>
Signed-off-by: NKent Yoder <key@linux.vnet.ibm.com>

drivers/char/tpm/tpm_i2c_stm_st33.c

@@ -96,15 +96,13 @@ enum tis_defaults {
 static int write8_reg(struct i2c_client *client, u8 tpm_register,
 		      u8 *tpm_data, u16 tpm_size)
 {
-	u8 data;
 	int value = 0;
 	struct st33zp24_platform_data *pin_infos;
 
 	pin_infos = client->dev.platform_data;
 
-	data = tpm_register;
-	memcpy(pin_infos->tpm_i2c_buffer[0], &data, sizeof(data));
-	memcpy(pin_infos->tpm_i2c_buffer[0] + 1, tpm_data, tpm_size);
+	pin_infos->tpm_i2c_buffer[0][0] = tpm_register;
+	memcpy(&pin_infos->tpm_i2c_buffer[0][1], tpm_data, tpm_size);
 	value = i2c_master_send(client, pin_infos->tpm_i2c_buffer[0],
 				tpm_size + 1);
 	return value;