linux-phytec-ti

drm/exynos: mic: make all functions static

There is no point exposing all internal functions to global kernel name
space, so make all internals functions static.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>