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>