[PATCH] x86: Remove incorrect comment about ACPI e820 entries

They cannot be actually freed because the FACS table has a
shared-with-the-BIOS lock.
Signed-off-by: Andi Kleen <ak@suse.de>

include/asm-i386/e820.h

@@ -18,7 +18,7 @@
 
 #define E820_RAM	1
 #define E820_RESERVED	2
-#define E820_ACPI	3 /* usable as RAM once ACPI tables have been read */
+#define E820_ACPI	3
 #define E820_NVS	4
 
 #define HIGH_MEMORY	(1024*1024)

include/asm-x86_64/e820.h

@@ -19,7 +19,7 @@
 
 #define E820_RAM	1
 #define E820_RESERVED	2
-#define E820_ACPI	3 /* usable as RAM once ACPI tables have been read */
+#define E820_ACPI	3
 #define E820_NVS	4
 
 #ifndef __ASSEMBLY__