pinctrl: Support split pin lists and ranges

For bash completion support it's convenient to be able to write:

   pinctrl BT_RTS-BT_CTS,BT_ON

as:

   pinctrl BT_RTS -BT_CTS ,BT_ON

Signed-off-by: Phil Elwell <[email protected]>

Author: pelwell

pinctrl/pinctrl.c

@@ -434,6 +434,12 @@ int main(int argc, char *argv[])
             }
             p += len;
 
+            if (*p == '\0' && argc && (argv[0][0] == '-' || argv[0][0] == ','))
+            {
+                p = *(argv++);
+                argc--;
+            }
+
             if (*p == '-')
             {
                 p++;
@@ -475,6 +481,11 @@ int main(int argc, char *argv[])
                 gpiomask[gpio/32] |= (1 << (gpio % 32));
                 gpio++;
             }
+            if (*p == '\0' && argc && argv[0][0] == ',')
+            {
+                p = *(argv++);
+                argc--;
+            }
             if (*p == '\0')
             {
                 p = NULL;