ARM: dts: clps711x: Add SYSCON nodes where it is used

This patch adds SYSCON descriptors to framebuffer, SPI, DAI
and modem control GPIO nodes to further rework these drivers
to remove the call to the syscon_regmap_lookup_by_compatible() function.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Link: https://lore.kernel.org/r/20210405051658.26779-1-shc_work@mail.ru'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/ep7209.dtsi

@@ -108,6 +108,7 @@ fb: fb@800002c0 {
 			compatible = "cirrus,ep7209-fb";
 			reg = <0x800002c0 0xd44>, <0x60000000 0xc000>;
 			clocks = <&clks CLPS711X_CLK_BUS>;
+			syscon = <&syscon1>;
 			status = "disabled";
 		};
 
@@ -147,6 +148,7 @@ spi: spi@80000500 {
 			reg = <0x80000500 0x4>;
 			interrupts = <15>;
 			clocks = <&clks CLPS711X_CLK_SPI>;
+			syscon = <&syscon3>;
 			status = "disabled";
 		};
 
@@ -170,6 +172,7 @@ dai: dai@80002000 {
 			clocks = <&clks CLPS711X_CLK_PLL>;
 			clock-names = "pll";
 			interrupts = <32>;
+			syscon = <&syscon3>;
 			status = "disabled";
 		};
 
@@ -181,6 +184,7 @@ syscon3: syscon@80002200 {
 
 	mctrl: mctrl {
 		compatible = "cirrus,ep7209-mctrl-gpio";
+		gpio,syscon-dev = <&syscon1 0 0>;
 		gpio-controller;
 		#gpio-cells = <2>;
 	};