ARM: dts: r8a7791: Drop _clk suffix from external CAN clock node name

The current practice is to not add _clk suffixes to clock node names in
DT, as these names are used as the actual clock names.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7791.dtsi

@@ -1126,7 +1126,7 @@ usb_extal_clk: usb_extal {
 		};
 
 		/* External CAN clock */
-		can_clk: can_clk {
+		can_clk: can {
 			compatible = "fixed-clock";
 			#clock-cells = <0>;
 			/* This value must be overridden by the board. */