ARM: 6261/1: arm/shark: fix debug macro compilation failure

We need a waituart macro.
Signed-off-by: NJeremy Kerr <jeremy.kerr@canonical.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-shark/include/mach/debug-macro.S

@@ -20,6 +20,9 @@
 		strb	\rd, [\rx]
 		.endm
 
+		.macro waituart,rd,rx
+		.endm
+
 		.macro	busyuart,rd,rx
 		mov	\rd, #0
 1001:		add	\rd, \rd, #1