net: wwan: core: init port type string array using enum values

This array is indexed by port type. Make it self-descriptive by using
the port type enum values as indices in the array initializer.
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wwan/wwan_core.c

@@ -184,13 +184,12 @@ static void wwan_remove_dev(struct wwan_device *wwandev)
 
 /* ------- WWAN port management ------- */
 
-/* Keep aligned with wwan_port_type enum */
-static const char * const wwan_port_type_str[] = {
-	"AT",
-	"MBIM",
-	"QMI",
-	"QCDM",
-	"FIREHOSE"
+static const char * const wwan_port_type_str[WWAN_PORT_MAX + 1] = {
+	[WWAN_PORT_AT] = "AT",
+	[WWAN_PORT_MBIM] = "MBIM",
+	[WWAN_PORT_QMI] = "QMI",
+	[WWAN_PORT_QCDM] = "QCDM",
+	[WWAN_PORT_FIREHOSE] = "FIREHOSE",
 };
 
 static ssize_t type_show(struct device *dev, struct device_attribute *attr,