Add '+' sign to more keys of '-' key

Note that the tablet number/phone layout has its own '+' key.

Bug: 7255318
Change-Id: I5cc0431cf772a859eb456e9c36b07bfd0cc1278d
3 files changed
tree: 517de295bc93d7d91ede7943fac5a5e5b88544d5
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk