powerpc:Fix return type & parameter passed for I/O functions

Return type of in_8, in_be16 and in_le16 should not be'int'. Update it to type
u8/u16/u32.
Although 'unsigned' for in_be32 and in_le32 is correct. But to make return type
uniform across the file changed to u32

Similarly, parameter passed to out_8, out_be16, out_le16 ,out_be32 & out_le32
should not be 'int'.Change it to type u8/u16/u32.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>

arch/powerpc/include/asm/io.h

@@ -162,9 +162,9 @@ static inline void __raw_writel(unsigned int v, volatile void __iomem *addr)
  * is actually performed (i.e. the data has come back) before we start
  * executing any following instructions.
  */
-extern inline int in_8(const volatile unsigned char __iomem *addr)
+extern inline u8 in_8(const volatile unsigned char __iomem *addr)
 {
-	int ret;
+	u8 ret;
 
 	__asm__ __volatile__(
 		"sync; lbz%U1%X1 %0,%1;\n"
@@ -173,7 +173,7 @@ extern inline int in_8(const volatile unsigned char __iomem *addr)
 	return ret;
 }
 
-extern inline void out_8(volatile unsigned char __iomem *addr, int val)
+extern inline void out_8(volatile unsigned char __iomem *addr, u8 val)
 {
 	__asm__ __volatile__("sync;\n"
 			     "stb%U0%X0 %1,%0;\n"
@@ -181,9 +181,9 @@ extern inline void out_8(volatile unsigned char __iomem *addr, int val)
 			     : "r" (val));
 }
 
-extern inline int in_le16(const volatile unsigned short __iomem *addr)
+extern inline u16 in_le16(const volatile unsigned short __iomem *addr)
 {
-	int ret;
+	u16 ret;
 
 	__asm__ __volatile__("sync; lhbrx %0,0,%1;\n"
 			     "twi 0,%0,0;\n"
@@ -192,9 +192,9 @@ extern inline int in_le16(const volatile unsigned short __iomem *addr)
 	return ret;
 }
 
-extern inline int in_be16(const volatile unsigned short __iomem *addr)
+extern inline u16 in_be16(const volatile unsigned short __iomem *addr)
 {
-	int ret;
+	u16 ret;
 
 	__asm__ __volatile__("sync; lhz%U1%X1 %0,%1;\n"
 			     "twi 0,%0,0;\n"
@@ -202,20 +202,20 @@ extern inline int in_be16(const volatile unsigned short __iomem *addr)
 	return ret;
 }
 
-extern inline void out_le16(volatile unsigned short __iomem *addr, int val)
+extern inline void out_le16(volatile unsigned short __iomem *addr, u16 val)
 {
 	__asm__ __volatile__("sync; sthbrx %1,0,%2" : "=m" (*addr) :
 			      "r" (val), "r" (addr));
 }
 
-extern inline void out_be16(volatile unsigned short __iomem *addr, int val)
+extern inline void out_be16(volatile unsigned short __iomem *addr, u16 val)
 {
 	__asm__ __volatile__("sync; sth%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
 }
 
-extern inline unsigned in_le32(const volatile unsigned __iomem *addr)
+extern inline u32 in_le32(const volatile unsigned __iomem *addr)
 {
-	unsigned ret;
+	u32 ret;
 
 	__asm__ __volatile__("sync; lwbrx %0,0,%1;\n"
 			     "twi 0,%0,0;\n"
@@ -224,9 +224,9 @@ extern inline unsigned in_le32(const volatile unsigned __iomem *addr)
 	return ret;
 }
 
-extern inline unsigned in_be32(const volatile unsigned __iomem *addr)
+extern inline u32 in_be32(const volatile unsigned __iomem *addr)
 {
-	unsigned ret;
+	u32 ret;
 
 	__asm__ __volatile__("sync; lwz%U1%X1 %0,%1;\n"
 			     "twi 0,%0,0;\n"
@@ -234,13 +234,13 @@ extern inline unsigned in_be32(const volatile unsigned __iomem *addr)
 	return ret;
 }
 
-extern inline void out_le32(volatile unsigned __iomem *addr, int val)
+extern inline void out_le32(volatile unsigned __iomem *addr, u32 val)
 {
 	__asm__ __volatile__("sync; stwbrx %1,0,%2" : "=m" (*addr) :
 			     "r" (val), "r" (addr));
 }
 
-extern inline void out_be32(volatile unsigned __iomem *addr, int val)
+extern inline void out_be32(volatile unsigned __iomem *addr, u32 val)
 {
 	__asm__ __volatile__("sync; stw%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
 }