nb/intel/gm45/pm.c: Make clang happy

Clang complains that the terniary '?' operator is executed before the
bitwise '|'. This is true and desired in this case. Being explicit
about won't hurt however.

Change-Id: I27d1fc1c19e1dab3d1c82e407151eaa46f8c7b03
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62172
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
diff --git a/src/northbridge/intel/gm45/pm.c b/src/northbridge/intel/gm45/pm.c
index f1b7abc..656a632 100644
--- a/src/northbridge/intel/gm45/pm.c
+++ b/src/northbridge/intel/gm45/pm.c
@@ -171,7 +171,7 @@
 	mchbar_setbits32(0xf80, 1 << 31);
 
 	mchbar_write32(0x40, (mchbar_read32(0x40) & ~(0x3f << 24)) |
-		(sysinfo->cores == 4) ? (1 << 24) : 0);
+		       ((sysinfo->cores == 4) ? (1 << 24) : 0));
 
 	mchbar_clrbits32(0x40, 1 << 19);
 	mchbar_setbits32(0x40, 1 << 13);