[ARM] Move ice-dcc code into misc.c

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c
index 28626ec..0af3772 100644
--- a/arch/arm/boot/compressed/misc.c
+++ b/arch/arm/boot/compressed/misc.c
@@ -30,7 +30,20 @@
 #include <asm/arch/uncompress.h>
 
 #ifdef CONFIG_DEBUG_ICEDCC
-extern void icedcc_putc(int ch);
+static void icedcc_putc(int ch)
+{
+	int status, i = 0x4000000;
+
+	do {
+		if (--i < 0)
+			return;
+
+		asm("mrc p14, 0, %0, c0, c0, 0" : "=r" (status));
+	} while (status & 2);
+
+	asm("mcr p15, 0, %0, c1, c0, 0" : : "r" (ch));
+}
+
 #define putc(ch)	icedcc_putc(ch)
 #define flush()	do { } while (0)
 #endif