haswell: use #defines for constants in udelay.c

Change the hard coded values in udelay.c to use the #defines
for MSRs and BCLK.

Change-Id: I2bbeb0b478d2e3ca155e8f82006df86c29a4f018
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2629
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
1 file changed