[uml-user] UML build broken since 3.0.75 (also affects 3.2.x)

[Antoine M. <an...@na...>]

Linus' vm patches broke the UML build in 3.0.75 onwards:

  CC      mm/memory.o
mm/memory.c: In function ‘vm_iomap_memory’:
mm/memory.c:2363:2: error: implicit declaration of function
‘io_remap_pfn_range’ [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[1]: *** [mm/memory.o] Error 1
make: *** [mm] Error 2


This fix is just a copy of what is found in later kernels.
Compiled and boot tested both 3.0.80 and 3.2.45, x86_64 and i386.

Signed-off-by: Antoine Martin <an...@na...>

--- a/arch/um/include/asm/pgtable.h	2013-05-25 09:20:51.420000000 +0000
+++ b/arch/um/include/asm/pgtable.h	2013-04-29 00:36:01.000000000 +0000
@@ -69,6 +69,8 @@
 #define PAGE_KERNEL	__pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY |
_PAGE_ACCESSED)
 #define PAGE_KERNEL_EXEC	__pgprot(__PAGE_KERNEL_EXEC)

+#define io_remap_pfn_range	remap_pfn_range
+
 /*
  * The i386 can't do page protection for execute, and considers that
the same
  * are read.