ARM: dts: shmobile: Update CMT1 compatible values

New compatible values were introduced for the 48-bit CMT devices on
SH-Mobile AG5 and R-Mobile A1, and the old "cmt-48"-based values were
deprecated.  However, the actual DTS files were never updated.

See also commits:
  - 81b604c3 ("dt-bindings: timer: renesas, cmt: Update CMT1 on
    sh73a0 and r8a7740"),
  - 8c1afba2 ("clocksource/drivers/sh_cmt: r8a7740 and sh73a0
    SoC-specific match"),
  - 19d60845 ("clocksource/drivers/sh_cmt: Document "cmt-48" as
    deprecated").
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200420151553.22975-1-geert+renesas@glider.be

arch/arm/boot/dts/r8a7740.dtsi

@@ -83,7 +83,7 @@ ceu1: ceu@fe914000 {
 	};
 
 	cmt1: timer@e6138000 {
-		compatible = "renesas,cmt-48-r8a7740", "renesas,cmt-48";
+		compatible = "renesas,r8a7740-cmt1";
 		reg = <0xe6138000 0x170>;
 		interrupts = <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp3_clks R8A7740_CLK_CMT1>;

arch/arm/boot/dts/sh73a0.dtsi

@@ -99,7 +99,7 @@ pmu {
 	};
 
 	cmt1: timer@e6138000 {
-		compatible = "renesas,cmt-48-sh73a0", "renesas,cmt-48";
+		compatible = "renesas,sh73a0-cmt1";
 		reg = <0xe6138000 0x200>;
 		interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp3_clks SH73A0_CLK_CMT1>;