[POWERPC] ppc: More compile fixes

This fixes a few more miscellaneous compile problems with ARCH=ppc.

1. Don't compile devres.c on ARCH=ppc, it doesn't have ioremap_flags.
2. Include <asm/irq.h> in setup.c for the __DO_IRQ_CANON definition.
3. Include <linux/proc_fs.h> in residual.c for the
   definition of create_proc_read_entry.
4. Fix xchg_ptr to be a static inline to eliminate a compiler warning.

Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/lib/Makefile

@@ -10,6 +10,7 @@ ifeq ($(CONFIG_PPC_MERGE),y)
 obj-y			:= string.o alloc.o \
 			   checksum_$(CONFIG_WORD_SIZE).o
 obj-$(CONFIG_PPC32)	+= div64.o copy_32.o
+obj-$(CONFIG_HAS_IOMEM)	+= devres.o
 endif
 
 obj-$(CONFIG_PPC64)	+= copypage_64.o copyuser_64.o \
@@ -23,4 +24,3 @@ obj-$(CONFIG_SMP)	+= locks.o
 endif
 
 obj-$(CONFIG_PPC_LIB_RHEAP) += rheap.o
-obj-$(CONFIG_HAS_IOMEM)	+= devres.o

arch/ppc/kernel/setup.c

@@ -36,6 +36,7 @@
 #include <asm/nvram.h>
 #include <asm/xmon.h>
 #include <asm/ocp.h>
+#include <asm/irq.h>
 
 #define USES_PPC_SYS (defined(CONFIG_MPC10X_BRIDGE) || defined(CONFIG_8260) || \
 		      defined(CONFIG_PPC_MPC52xx))

arch/ppc/platforms/residual.c

@@ -38,6 +38,7 @@
 #include <linux/init.h>
 #include <linux/ioport.h>
 #include <linux/pci.h>
+#include <linux/proc_fs.h>
 
 #include <asm/sections.h>
 #include <asm/mmu.h>

include/asm-ppc/system.h

@@ -178,7 +178,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size
 
 }
 
-extern inline void * xchg_ptr(void * m, void * val)
+static inline void * xchg_ptr(void * m, void * val)
 {
 	return (void *) xchg_u32(m, (unsigned long) val);
 }