ARM: uniphier: fix various sparse warnings

Fix warnings reported by sparse:
 - ... was not declared. Should it be static?"
 - cast to restricted __be32

While fixing those, the type conflict of cci500_init() was found.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/clk/pll-pxs3.c b/arch/arm/mach-uniphier/clk/pll-pxs3.c
index e29d9d0..201d351 100644
--- a/arch/arm/mach-uniphier/clk/pll-pxs3.c
+++ b/arch/arm/mach-uniphier/clk/pll-pxs3.c
@@ -2,6 +2,8 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
+#include "../init.h"
+
 void uniphier_pxs3_pll_init(void)
 {
 }