OMAP clock: associate MPU clocks with the mpu_clkdm

All MPU-related clocks should be in the mpu_clkdm.  This is needed for the
upcoming omap_hwmod patches, which needs to know the clockdomain that arm_fck
is in.

Signed-off-by: Paul Walmsley <paul@pwsan.com>

arch/arm/mach-omap2/clock34xx.h

@@ -1020,6 +1020,7 @@ static struct clk arm_fck = {
 	.clksel_reg	= OMAP_CM_REGADDR(MPU_MOD, OMAP3430_CM_IDLEST_PLL),
 	.clksel_mask	= OMAP3430_ST_MPU_CLK_MASK,
 	.clksel		= arm_fck_clksel,
+	.clkdm_name	= "mpu_clkdm",
 	.recalc		= &omap2_clksel_recalc,
 };