lcd: JZ4750D: Use __lcd_* macros instead of writing regs directly
lcd: JZ4750D: Simplify jz4750fb_check_var() and jz4750fb_pan_display()
lcd: JZ4750D: Add a hack to jz4750fb_pan_display for correct panning.

  If there's a 480x272 panel, SDL could request a smaller resolution
(320x200 or 400x240). When osd res always equals panel res SDL emulates
smaller resolution with proper centering. It's no problem with software
surfaces but with hardware ones panning fails because var->yoffset contains
not the panel==osd height.

  Example: 400x240 is rendered on 480x272. var->yoffset should
contain 0 or 272 but it holds 0 or 240! Thus the screen becomes
shifted every second frame.

  REMOVE THIS HACK WHEN PROPER OSD SETTING IS IMPLEMENTED!
lcd: JZ4750D: Remove unused tvout_display_h and tvout_display_w
MIPS: JZ4750D: Fix settings for a380 buttons