Adding support to rotation on blizzard

Adding support to rotation on blizzard

The LCD controller (EPSON S1D13744) supports
rotation (0, 90, 180 and 270 degrees) on hardware just setting
the bits 0 and 1 of 0x28 register (LCD Panel Configuration Register).
Now it is possible to use this caps only setting the angle degree on var rotate of fb_var_screeninfo using the FBIOPUT_VSCREENINFO ioctl.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@openbossa.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>