nb/intel/i945/early_init.c: Use "IS_ENABLED(CONFIG_ ....)"

Change-Id: I230b5425ac9e916a5ee10a49eeaf5d6d44fd49e6
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/17192
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/northbridge/intel/i945/early_init.c b/src/northbridge/intel/i945/early_init.c
index 4373167..5d1a0c2 100644
--- a/src/northbridge/intel/i945/early_init.c
+++ b/src/northbridge/intel/i945/early_init.c
@@ -90,9 +90,9 @@
 		printk(BIOS_INFO, "unknown max. RAM clock (%02x).", reg8);	/* Others reserved. */
 	}
 	printk(BIOS_DEBUG, "\n");
-#if CONFIG_NORTHBRIDGE_INTEL_SUBTYPE_I945GC
-	printk(BIOS_ERR, "coreboot is compiled for the wrong chipset.\n");
-#endif
+
+	if (IS_ENABLED(CONFIG_NORTHBRIDGE_INTEL_SUBTYPE_I945GC))
+		printk(BIOS_ERR, "coreboot is compiled for the wrong chipset.\n");
 }
 
 static void i945_detect_chipset(void)
@@ -139,9 +139,9 @@
 		printk(BIOS_INFO, "unknown max. RAM clock (%02x).", reg8);	/* Others reserved. */
 	}
 	printk(BIOS_DEBUG, "\n");
-#if CONFIG_NORTHBRIDGE_INTEL_SUBTYPE_I945GM
-	printk(BIOS_ERR, "coreboot is compiled for the wrong chipset.\n");
-#endif
+
+	if (IS_ENABLED(CONFIG_NORTHBRIDGE_INTEL_SUBTYPE_I945GM))
+		printk(BIOS_ERR, "coreboot is compiled for the wrong chipset.\n");
 }
 
 static void i945_setup_bars(void)