Added HAL_PIXEL_FORMAT_UNDEFINED_8888 define to override problems with a few apps (i.e. Sygic) using a PixelFormat in the forbidden range 0x8 - 0xFF

Change-Id: Ic77822dd255abe1c369c1adb4fee39056f9f219c
Fix for apps using the invalid PixelFormat 8 (i.e. Sygic)

Change-Id: I677b1bfe1383eb417802f0ea54839468cc11711b
Fix for apps using the invalid PixelFormat 8 (i.e. Sygic)

Change-Id: I33727d4b0782c90dbe1da39c34843e6c12aa531e