northbridge/intel/sandybridge/bootblock.c: Remove repeated word

Change-Id: I9e723e1d31b093a4781413efe7f290a295b833dc
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49524
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jacob Garber <jgarber1@ualberta.ca>
diff --git a/src/northbridge/intel/sandybridge/bootblock.c b/src/northbridge/intel/sandybridge/bootblock.c
index dad61f9..bea85f4 100644
--- a/src/northbridge/intel/sandybridge/bootblock.c
+++ b/src/northbridge/intel/sandybridge/bootblock.c
@@ -10,7 +10,7 @@
 
 	/*
 	 * The "io" variant of the config access is explicitly used to setup the
-	 * PCIEXBAR because CONFIG(MMCONF_SUPPORT) is set to to true. That way, all
+	 * PCIEXBAR because CONFIG(MMCONF_SUPPORT) is set to true. That way, all
 	 * subsequent non-explicit config accesses use MCFG. This code also assumes
 	 * that bootblock_northbridge_init() is the first thing called in the non-asm
 	 * boot block code. The final assumption is that no assembly code is using the