Pull up following revision(s) (requested by msaitoh in ticket #832):

sys/dev/ic/spdmemvar.h: revision 1.15
sys/dev/ic/spdmemvar.h: revision 1.16
sys/dev/ic/spdmem.c: revision 1.32
sys/dev/ic/spdmem.c: revision 1.33
sys/dev/ic/spdmem.c: revision 1.34
sys/dev/ic/spdmem.c: revision 1.35

  Print DDR3's row and column correctly.

KNF. No functional change.

- Define some new parameters of DDR3 SPD ROM.
- Use fine timebase parameters for time calculation on DDR3. This change
  makes PC3-XXXX value more correctly on newer DDR3.

Calculate DDR3's tRAS correctly.

  Fix unused area size found by pgoyette@.

(martin)