MIPS: board.c: move extern declarations to u-boot-mips.h

This fixes some remaining checkpatch.pl warnings.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>

arch/mips/include/asm/u-boot-mips.h

@@ -0,0 +1,11 @@
+/*
+ * This file is released under the terms of GPL v2 and any later version.
+ * See the file COPYING in the root directory of the source tree for details.
+ *
+ * Copyright (C) 2003 Wolfgang Denk, DENX Software Engineering, wd@denx.de
+ */
+
+extern ulong uboot_end_data;
+extern ulong uboot_end;
+
+extern int incaip_set_cpuclk(void);