x86: kernel/pci-dma.c cleanups

This patch contains the following cleanups:
- make the following needlessly global code static:
  - dma_alloc_pages()

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index c5ef1af..5bc29ca 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -357,7 +357,7 @@
 EXPORT_SYMBOL(dma_supported);
 
 /* Allocate DMA memory on node near device */
-noinline struct page *
+static noinline struct page *
 dma_alloc_pages(struct device *dev, gfp_t gfp, unsigned order)
 {
 	int node;