Frameworks: Store dialpad showing state (1/2)

Change-Id: I1442d2a0d059ba22e32a6ba644af090e2465c6df
Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Merge commit 'refs/changes/22/622/2' of https://review.carbonrom.org/CarbonDev/android_frameworks_base into kitkat