[PATCH RFC 3/4] pinctrl: Add support for muxing individual pins

From: Charles Keepax Currently pinmuxing can only be applied to groups, this has lead to several drivers within the kernel adding many pin groups that just contain a single pin to allow muxing of individual pins. Add support to the core for muxing individual

[PATCH RFC 3/4] pinctrl: Add support for muxing individual pins

From: Charles Keepax Currently pinmuxing can only be applied to groups, this has lead to several drivers within the kernel adding many pin groups that just contain a single pin to allow muxing of individual pins. Add support to the core for muxing individual pins. Groups are still used as a