If I'm interpreting the git history correctly,
the config file for Zen Vision was at some point
inadvertently replaced with one for the
Zen Vision:M.
This deletes the currently unused creativezv.h,
and moves its contents into zenvision.h.
The config files appear to be identical except for
CREATIVE_ZV vs CREATIVE_ZVM define, different
keypads (CREATIVEZVM_PAD vs CREATIVEZV_PAD) and
BOOTFILE_EXT (zv vs zvm), a different model name
and number, as well as different LCD dimensions
and DPI.
The buttonmap still seems to require adjustment.
Change-Id: I9a5e65df750db21be5f5a1ed7a80a50706237781
