am335x: add some missing CM_CLKMODE_DPLL_SSC macros

add missing CM_CLKMODE_DPLL_SSC_ACK_MASK,
CM_CLKMODE_DPLL_SSC_DOWNSPREAD_MASK and
CM_CLKMODE_DPLL_SSC_TYPE_MASK
defines. Used for enabling spread spectrum.

Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>

arch/arm/include/asm/arch-am33xx/clock.h

@@ -44,6 +44,9 @@
 /* CM_CLKMODE_DPLL */
 #define CM_CLKMODE_DPLL_SSC_EN_SHIFT		12
 #define CM_CLKMODE_DPLL_SSC_EN_MASK		(1 << 12)
+#define CM_CLKMODE_DPLL_SSC_ACK_MASK		(1 << 13)
+#define CM_CLKMODE_DPLL_SSC_DOWNSPREAD_MASK	(1 << 14)
+#define CM_CLKMODE_DPLL_SSC_TYPE_MASK		(1 << 15)
 #define CM_CLKMODE_DPLL_REGM4XEN_SHIFT		11
 #define CM_CLKMODE_DPLL_REGM4XEN_MASK		(1 << 11)
 #define CM_CLKMODE_DPLL_LPMODE_EN_SHIFT		10