cpu/x86/mtrr: Fix broken output ("indexis")

The missing space resulted in the following broken output:

> ERROR: Not enough MTRRs available! MTRR indexis 10 with 10 MTTRs in
total.

Put the string on one line to make it obvious where the spaces should be
and to help users of grep.

Change-Id: Ib9e8109d88c1bf38e7dda3dbf1c8d47fb0d23265
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/25567
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions