extcon: Redefine the unique id of supported external connectors without 'enum extcon' type

This patch just redefine the unique id of supported external connectors without
'enum extcon' type. Because unique id would be used on devictree file(*.dts) to
indicate the specific external connectors like key number of input framework.
So, I have the plan to move this definitions to following header file which
includes the unique id of supported external connectors.
- include/dt-bindings/extcon/extcon.h

Fixes: 2a9de9c0f0 ("extcon: Use the unique id for external connector instead of string")
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/extcon/extcon-rt8973a.c

@@ -90,7 +90,7 @@ static struct reg_data rt8973a_reg_data[] = {
 };
 
 /* List of detectable cables */
-static const enum extcon rt8973a_extcon_cable[] = {
+static const unsigned int rt8973a_extcon_cable[] = {
 	EXTCON_USB,
 	EXTCON_USB_HOST,
 	EXTCON_TA,
@@ -300,7 +300,7 @@ static int rt8973a_muic_cable_handler(struct rt8973a_muic_info *info,
 	static unsigned int prev_cable_type;
 	unsigned int con_sw = DM_DP_SWITCH_UART;
 	int ret, cable_type;
-	enum extcon id;
+	unsigned int id;
 	bool attached = false;
 
 	switch (event) {