x86: Add some log categories

Add categories for i8259 and bios files, so that log statements have the
right category.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/lib/bios.c b/arch/x86/lib/bios.c
index 03f7360..acae635 100644
--- a/arch/x86/lib/bios.c
+++ b/arch/x86/lib/bios.c
@@ -5,6 +5,9 @@
  * Copyright (C) 2007 Advanced Micro Devices, Inc.
  * Copyright (C) 2009-2010 coresystems GmbH
  */
+
+#define LOG_CATEGRORY	LOGC_ARCH
+
 #include <compiler.h>
 #include <bios_emul.h>
 #include <irq_func.h>
diff --git a/arch/x86/lib/bios_interrupts.c b/arch/x86/lib/bios_interrupts.c
index b2cf152..3ae6c19 100644
--- a/arch/x86/lib/bios_interrupts.c
+++ b/arch/x86/lib/bios_interrupts.c
@@ -7,6 +7,8 @@
  * Copyright (C) 2007-2009 coresystems GmbH
  */
 
+#define LOG_CATEGRORY	LOGC_ARCH
+
 #include <log.h>
 #include <asm/pci.h>
 #include "bios_emul.h"
diff --git a/arch/x86/lib/i8259.c b/arch/x86/lib/i8259.c
index 465ff70..088f78f 100644
--- a/arch/x86/lib/i8259.c
+++ b/arch/x86/lib/i8259.c
@@ -13,6 +13,8 @@
  * Programmable Interrupt Controllers.
  */
 
+#define LOG_CATEGORY	UCLASS_IRQ
+
 #include <log.h>
 #include <asm/io.h>
 #include <asm/i8259.h>