i3c: master: mipi-i3c-hci: correct the config reference for endianness

The referred config BIG_ENDIAN does not exist. The config for the
endianness of the CPU architecture is called CPU_BIG_ENDIAN.

Correct the config name to the existing config for the endianness.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: Nicolas Pitre <npitre@baylibre.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220103094504.3602-1-lukas.bulwahn@gmail.com

drivers/i3c/master/mipi-i3c-hci/core.c

@@ -662,7 +662,7 @@ static int i3c_hci_init(struct i3c_hci *hci)
 
 	/* Make sure our data ordering fits the host's */
 	regval = reg_read(HC_CONTROL);
-	if (IS_ENABLED(CONFIG_BIG_ENDIAN)) {
+	if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) {
 		if (!(regval & HC_CONTROL_DATA_BIG_ENDIAN)) {
 			regval |= HC_CONTROL_DATA_BIG_ENDIAN;
 			reg_write(HC_CONTROL, regval);