i386: prepare shared kernel/pci-dma.c

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/i386/kernel/Makefile b/arch/i386/kernel/Makefile
index dd17240..c9dcdc0 100644
--- a/arch/i386/kernel/Makefile
+++ b/arch/i386/kernel/Makefile
@@ -6,7 +6,7 @@
 
 obj-y	:= process.o signal.o entry.o traps_32.o irq.o \
 		ptrace.o time.o ioport.o ldt.o setup.o i8259.o sys_i386.o \
-		pci-dma.o i386_ksyms.o i387.o bootflag.o e820.o\
+		pci-dma_32.o i386_ksyms.o i387.o bootflag.o e820.o\
 		quirks.o i8237.o topology.o alternative.o i8253_32.o tsc.o
 
 obj-$(CONFIG_STACKTRACE)	+= stacktrace.o
diff --git a/arch/i386/kernel/pci-dma.c b/arch/i386/kernel/pci-dma_32.c
similarity index 100%
rename from arch/i386/kernel/pci-dma.c
rename to arch/i386/kernel/pci-dma_32.c