EXYNOS: additional Exynos4 SoC series support

- Fixed MPLL register address
  It's different between Exynos4210 and Exynos4412.

- Added pinmux functions for Exynos4

- Added extended gpios for Exynos4412
  Exynos4412 has more gpios than Exynos4210.

Signed-off-by: Jeong-Hyeon Kim <jhkim@insignal.co.kr>
5 files changed