[ARM] OMAP2: Fix definition of SGX clock register bits

The GFX/SGX functional and interface clocks have different masks, for
some unknown reason, so split EN_SGX_SHIFT into one each for fclk and
iclk.

Correct according to the TRM and the far more important 'does this
actually work at all?' metric.

linux-omap source commit is de1121fdb899f762b9e717f44eaf3fae7c00cd3e.

Signed-off-by: Daniel Stone <daniel.stone@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-omap2/clock34xx.h

@@ -1293,7 +1293,7 @@ static struct clk sgx_fck = {
 	.ops		= &clkops_omap2_dflt_wait,
 	.init		= &omap2_init_clksel_parent,
 	.enable_reg	= OMAP_CM_REGADDR(OMAP3430ES2_SGX_MOD, CM_FCLKEN),
-	.enable_bit	= OMAP3430ES2_EN_SGX_SHIFT,
+	.enable_bit	= OMAP3430ES2_CM_FCLKEN_SGX_EN_SGX_SHIFT,
 	.clksel_reg	= OMAP_CM_REGADDR(OMAP3430ES2_SGX_MOD, CM_CLKSEL),
 	.clksel_mask	= OMAP3430ES2_CLKSEL_SGX_MASK,
 	.clksel		= sgx_clksel,
@@ -1307,7 +1307,7 @@ static struct clk sgx_ick = {
 	.parent		= &l3_ick,
 	.init		= &omap2_init_clk_clkdm,
 	.enable_reg	= OMAP_CM_REGADDR(OMAP3430ES2_SGX_MOD, CM_ICLKEN),
-	.enable_bit	= OMAP3430ES2_EN_SGX_SHIFT,
+	.enable_bit	= OMAP3430ES2_CM_ICLKEN_SGX_EN_SGX_SHIFT,
 	.clkdm_name	= "sgx_clkdm",
 	.recalc		= &followparent_recalc,
 };

arch/arm/mach-omap2/cm-regbits-34xx.h

@@ -332,8 +332,12 @@
 #define OMAP3430ES1_CLKACTIVITY_GFX_MASK		(1 << 0)
 
 /* CM_FCLKEN_SGX */
-#define OMAP3430ES2_EN_SGX_SHIFT			1
-#define OMAP3430ES2_EN_SGX_MASK				(1 << 1)
+#define OMAP3430ES2_CM_FCLKEN_SGX_EN_SGX_SHIFT		1
+#define OMAP3430ES2_CM_FCLKEN_SGX_EN_SGX_MASK		(1 << 1)
+
+/* CM_ICLKEN_SGX */
+#define OMAP3430ES2_CM_ICLKEN_SGX_EN_SGX_SHIFT		0
+#define OMAP3430ES2_CM_ICLKEN_SGX_EN_SGX_MASK		(1 << 0)
 
 /* CM_CLKSEL_SGX */
 #define OMAP3430ES2_CLKSEL_SGX_SHIFT			0