clk: samsung: exynos4: Add SSS gate clock

Add a gate clock for controlling all clocks of Security Sub System
(SSS).

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Stephen Boyd <[e-mail]>

drivers/clk/samsung/clk-exynos4.c

···
 			0, 0),
 	GATE(CLK_AC97, "ac97", "aclk100", GATE_IP_PERIL, 27,
 			0, 0),
+	GATE(CLK_SSS, "sss", "aclk133", GATE_IP_DMC, 4, 0, 0),
 	GATE(CLK_PPMUDMC0, "ppmudmc0", "aclk133", GATE_IP_DMC, 8, 0, 0),
 	GATE(CLK_PPMUDMC1, "ppmudmc1", "aclk133", GATE_IP_DMC, 9, 0, 0),
 	GATE(CLK_PPMUCPU, "ppmucpu", "aclk133", GATE_IP_DMC, 10, 0, 0),

include/dt-bindings/clock/exynos4.h

···
 #define CLK_SCLK_FIMG2D		177
 
 /* gate clocks */
+#define CLK_SSS			255
 #define CLK_FIMC0		256
 #define CLK_FIMC1		257
 #define CLK_FIMC2		258