{sb,soc}/intel/**/*.c: Use macros for PCI COMMAND bits

We have definitions for the bits in the PCI COMMAND register. Use them.
Also add spaces around bitwise operators, to comply with the code style.

Change-Id: Icc9c06597b340fc63fa583dd935e42e61ad9fbe5
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43839
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
diff --git a/src/soc/intel/braswell/gfx.c b/src/soc/intel/braswell/gfx.c
index 1bd0033..7599329 100644
--- a/src/soc/intel/braswell/gfx.c
+++ b/src/soc/intel/braswell/gfx.c
@@ -14,7 +14,7 @@
 
 static const struct reg_script gpu_pre_vbios_script[] = {
 	/* Make sure GFX is bus master with MMIO access */
-	REG_PCI_OR32(PCI_COMMAND, PCI_COMMAND_MASTER|PCI_COMMAND_MEMORY),
+	REG_PCI_OR32(PCI_COMMAND, PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY),
 	REG_SCRIPT_END
 };