[PATCH] arm64: mm: dump: add missing includes

[Mark Rutland]

The arm64 dump code is currently relying on some definitions which are
pulled in via transitive dependencies. On next-20150112 at least one of
these (PCI_IOBASE) is no longer pulled in with a defconfig build,
resulting in the following build failure:

arch/arm64/mm/dump.c:55:20: error: ‘PCI_IOBASE’ undeclared here (not in a function)
  { (unsigned long) PCI_IOBASE,  "PCI I/O start" },
                    ^
It seems we have implicit dependencies on the following definitions:

* PCI_IOBASE            (asm/io.h)
* MODULES_VADDR         (asm/memory.h)
* MODULES_END           (asm/memory.h)
* PAGE_OFFSET           (asm/memory.h)
* PTE_*                 (asm/pgtable-hwdef.h)
* ENOMEM                (asm/errno.h)
* device_initcall       (linux/init.h)

This patch ensures we explicitly include the relevant headers for the
above items, fixing the observed build issue and hopefully preventing
future issues as headers are refactored.

Signed-off-by: Mark Rutland <mark.rutland at arm.com>
Reported-by: Mark Brown <broonie at kernel.org>
Cc: Catalin Marinas <Catalin.Marinas at arm.com>
Cc: Laura Abbott <lauraa at codeaurora.org>
Cc: Steve Capper <steve.capper at linaro.org>
Cc: Will Deacon <Will.Deacon at arm.com>
---
 arch/arm64/mm/dump.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c
index cf33f33..df69e43 100644
--- a/arch/arm64/mm/dump.c
+++ b/arch/arm64/mm/dump.c
@@ -15,12 +15,17 @@
  */
 #include <linux/debugfs.h>
 #include <linux/fs.h>
+#include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/seq_file.h>
 
+#include <asm/errno.h>
 #include <asm/fixmap.h>
+#include <asm/io.h>
+#include <asm/memory.h>
 #include <asm/pgtable.h>
+#include <asm/pgtable-hwdef.h>
 
 #define LOWEST_ADDR	(UL(0xffffffffffffffff) << VA_BITS)
 
-- 
1.9.1