Add the PFC support for the R8A7792 SoC including pin groups for some
on-chip devices such as SCIF, INTC, and LBSC...
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
[geert: s/LSBC/LBSC/]
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>