ARM: shmobile: r8a7779: Use R8A7779_CLK_P as SCIF parent clock

Use R8A7779_CLK_P as parent clock for SCIF devices on r8a7779.
With this change in place the SCIF CCF handling matches the
legacy clock code. Also, this matches the data sheet.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7779.dtsi

@@ -464,12 +464,12 @@ mstp0_clks: clocks@ffc80030 {
 				 <&cpg_clocks R8A7779_CLK_P>,
 				 <&cpg_clocks R8A7779_CLK_S>,
 				 <&cpg_clocks R8A7779_CLK_S>,
-				 <&cpg_clocks R8A7779_CLK_S1>,
-				 <&cpg_clocks R8A7779_CLK_S1>,
-				 <&cpg_clocks R8A7779_CLK_S1>,
-				 <&cpg_clocks R8A7779_CLK_S1>,
-				 <&cpg_clocks R8A7779_CLK_S1>,
-				 <&cpg_clocks R8A7779_CLK_S1>,
+				 <&cpg_clocks R8A7779_CLK_P>,
+				 <&cpg_clocks R8A7779_CLK_P>,
+				 <&cpg_clocks R8A7779_CLK_P>,
+				 <&cpg_clocks R8A7779_CLK_P>,
+				 <&cpg_clocks R8A7779_CLK_P>,
+				 <&cpg_clocks R8A7779_CLK_P>,
 				 <&cpg_clocks R8A7779_CLK_P>,
 				 <&cpg_clocks R8A7779_CLK_P>,
 				 <&cpg_clocks R8A7779_CLK_P>,