ROMControl: LengthFilter on Carrier Label

Set's a filter on carrier label length
    Was previously possible to extend
    carrier label to two+ lines which
    only showed top half of second line
    (also cleans up "summary" so you
    can't set a huge amount of text)

Change-Id: Ie96dac9f28c85170e922ae9df659d025d7071f11
Merge "ROMControl: LengthFilter on Carrier Label" into jb-mr2