OMAP2/3 clock: omap2_clk_enable(): fix bugs in clockdomain handling

omap2_clk_enable() should enable a clock's clockdomain before
attempting to enable its parent clock's clockdomain.  Similarly, in
the unlikely event that the parent clock enable fails, the clockdomain
should be disabled.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --cc arch/arm/mach-omap2/clock.c
Simple merge