soc/intel/quark: Fix reg_script display

Remove extra ": " following reigster type.

TEST=Build and run on Galileo Gen2

Change-Id: I57dd40a540d7b5371a6c45174f47a311b83a2aab
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/14948
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed