p1c: board: update kernel defconfig filename

requires: https://gerrit.omnirom.org/8321/

Change-Id: Ia20853a5846a1590200ea2f6501539c11d400fed
Signed-off-by: Humberto Borba <humberos@gmail.com>
Merge pull request #1 from omnirom/android-4.4

p1c: board: update kernel defconfig filename