imx233: rework vdd5v shared irq handling

The previous code disabled the irq when there were fired. This seems
unreliable for some mysterious reason. Instead simply disable them
before enabling the irq.

Change-Id: I7ee1aa25dbc41c7dd53aa7c7744aa5e4d70ff2d8
Reviewed-on: http://gerrit.rockbox.org/640
Reviewed-by: benjamin brown <foolshperson@gmail.com>
Tested-by: benjamin brown <foolshperson@gmail.com>
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>
1 file changed