fio: Include support for ARM

Assembly instructions picked from include/asm-arm/system.h

Signed-off-by: Kedar Sovani <kedars@marvell.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/arch/arch.h b/arch/arch.h
index f4eb855..28c6632 100644
--- a/arch/arch.h
+++ b/arch/arch.h
@@ -10,6 +10,7 @@
 	arch_alpha,
 	arch_sparc,
 	arch_sparc64,
+	arch_arm,
 };
 
 #if defined(__i386__)
@@ -28,6 +29,8 @@
 #include "arch-sparc.h"
 #elif defined(__sparc64__)
 #include "arch-sparc64.h"
+#elif defined(__arm__)
+#include "arch-arm.h"
 #else
 #error "Unsupported arch"
 #endif