pinctrl: renesas: r8a77965: Add R8A774B1 PFC support

Renesas RZ/G2N (r8a774b1) is pin compatible with R-Car M3-N (r8a77965),
however it doesn't have several automotive specific peripherals. Add
a r8a77965 specific pin groups/functions along with common pin
groups/functions for supporting both r8a77965 and r8a774b1 SoC.

PFC changes are synced from mainline linux-5.9 commit
bbf5c979011a ("Linux 5.9").

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
diff --git a/drivers/pinctrl/renesas/Makefile b/drivers/pinctrl/renesas/Makefile
index a4eb912..59dfd05 100644
--- a/drivers/pinctrl/renesas/Makefile
+++ b/drivers/pinctrl/renesas/Makefile
@@ -1,5 +1,6 @@
 obj-$(CONFIG_PINCTRL_PFC) += pfc.o
 obj-$(CONFIG_PINCTRL_PFC_R8A774A1) += pfc-r8a7796.o
+obj-$(CONFIG_PINCTRL_PFC_R8A774B1) += pfc-r8a77965.o
 obj-$(CONFIG_PINCTRL_PFC_R8A7790) += pfc-r8a7790.o
 obj-$(CONFIG_PINCTRL_PFC_R8A7791) += pfc-r8a7791.o
 obj-$(CONFIG_PINCTRL_PFC_R8A7792) += pfc-r8a7792.o