OMAP2xxx clock: set up clockdomain pointer in struct clk

clock24xx.c is missing a omap2_init_clk_clkdm() in its
omap2_clk_init() function. Among other bad effects, this causes the
OMAP hwmod layer to oops on boot.

Thanks to Carlos Aguiar <[e-mail]> and Stefano
Panella <[e-mail]> for reporting this bug. Thanks to Tony
Lindgren <[e-mail]> for N800 booting advice.

Signed-off-by: Paul Walmsley <[e-mail]>
Cc: Carlos Aguiar <[e-mail]>
Cc: Stefano Panella <[e-mail]>
Cc: Tony Lindgren <[e-mail]>

arch/arm/mach-omap2/clock24xx.c

···
 		if (c->cpu & cpu_mask) {
 			clkdev_add(&c->lk);
 			clk_register(c->lk.clk);
+			omap2_init_clk_clkdm(c->lk.clk);
 		}
 
 	/* Check the MPU rate set by bootloader */