[PATCH] use grub_get_time_ms() instead of grub_get_rtc()

[Robert Millan]

This replaces usage of grub_get_rtc() with grub_get_time_ms() in a few places
throurough the code.  Aside from the gained precision, it also permits that
functionality to work on Coreboot.

-- 
Robert Millan

  The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
  how) you may access your data; but nobody's threatening your freedom: we
  still allow you to remove your data and not access it at all."

get_time_ms.diff
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