[PATCH v2] clocksource: timer-ti-dm: Make unexported functions static

* Ladislav Michl [off-list ref] [180228 07:26]:

As dmtimer no longer exports functions, make those previously
exported static (this requires few functions to be moved around
as their prototypes were deleted).

Signed-off-by: Ladislav Michl <redacted>
---
 Changes:
 - v2: Fix compilation for OMAP1

Thanks for fixing this, applying into omap-for-v4.17/timer.

Regards,

Tony