TWL4030: convert early interrupt mask/clear funcs to use array

Mask/clear TWL module IMRs/ISRs by iterating through arrays rather than
using a block of cut-and-pasted commands.  Removes 1056 bytes of bloat.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>