of/mips: Cleanup some include directives/files.

The __init directives should go on the definitions of things, not the
declaration, also __init is meaningless for inline functions, so
remove it from prom.h.  This allows us to get rid of a useless
#include, but most of the rest of them are useless too, so kill them
as well.

If of_i2c.c needs irq definitions, it should include linux/irq.h
directly, not assume indirect inclusion via asm/prom.h.
Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
Acked-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

arch/mips/include/asm/prom.h

@@ -12,10 +12,6 @@
 #define __ASM_MIPS_PROM_H
 
 #ifdef CONFIG_OF
-#include <linux/init.h>
-
-#include <asm/setup.h>
-#include <asm/irq.h>
 #include <asm/bootinfo.h>
 
 /* which is compatible with the flattened device tree (FDT) */
@@ -27,9 +23,9 @@ extern int early_init_dt_scan_memory_arch(unsigned long node,
 extern int reserve_mem_mach(unsigned long addr, unsigned long size);
 extern void free_mem_mach(unsigned long addr, unsigned long size);
 
-extern void __init device_tree_init(void);
+extern void device_tree_init(void);
 #else /* CONFIG_OF */
-static inline void __init device_tree_init(void) { }
+static inline void device_tree_init(void) { }
 #endif /* CONFIG_OF */
 
 #endif /* _ASM_MIPS_PROM_H */

drivers/of/of_i2c.c

@@ -12,6 +12,7 @@
  */
 
 #include <linux/i2c.h>
+#include <linux/irq.h>
 #include <linux/of.h>
 #include <linux/of_i2c.h>
 #include <linux/of_irq.h>