Add missing resources for MDPI devices

These do not produce build errors, but Gallery crashes on Camera
launch since these drawables are missing. This fixes that.

Change-Id: Idb05f3624b914677e61e6cf87774f5ff75bd6108
Add 6mp, 4.5mp, 3.7mp, 2mp, WXGA & WQVGA resolutions

Used in SEMC 2011 devices

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I691739020eb32a19b7e46165be73dff4952f2c3e