camera: Fix loss of focus mode between shots

exynos_camera->focus_mode can't be relied upon to verify the previous
state, since a snapshot will reset the focus state. This was causing
any mode besides auto-focus (enum 0) to fail after the first photo
was taken, including the default continuous-picture.

Always make sure the focus-mode is up to date when set_params is
called

Change-Id: I8e6f52093ad897bcf04bc5047bb1fcd4f109dc55
(cherry picked from commit 40279ba1fd2d4f02d889699df1eccf3d3a01df55)
smdk4412: Enable camera message management

 * Fixes the deadlocks seen with back-to-back shots

Change-Id: I539b2618187fa4598556359f9dbce61f729cd909
(cherry picked from commit 9d32da5f03eb6357e3a89349116671649fdd7a23)