[PATCH] EDAC: add maintainers for chipset drivers

- Add entries to MAINTAINERS list for EDAC-E752X, EDAC-E7XXX, and
  EDAC-R82600 chipset drivers

- Fix MAINTAINERS entry for EDAC-CORE so it uses tabs rather than
  spaces to indent.  This is consistent with how the other entries are
  formatted.

Signed-off-by: David S. Peterson <dsp@llnl.gov>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>