xtensa: add missing symbol exports

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
diff --git a/arch/xtensa/kernel/pci-dma.c b/arch/xtensa/kernel/pci-dma.c
index 2783fda..2d9cc6d 100644
--- a/arch/xtensa/kernel/pci-dma.c
+++ b/arch/xtensa/kernel/pci-dma.c
@@ -21,6 +21,7 @@
 #include <linux/string.h>
 #include <linux/pci.h>
 #include <linux/gfp.h>
+#include <linux/module.h>
 #include <asm/io.h>
 #include <asm/cacheflush.h>
 
@@ -62,6 +63,7 @@
 
 	return (void*)uncached;
 }
+EXPORT_SYMBOL(dma_alloc_coherent);
 
 void dma_free_coherent(struct device *hwdev, size_t size,
 			 void *vaddr, dma_addr_t dma_handle)
@@ -73,6 +75,7 @@
 
 	free_pages(addr, get_order(size));
 }
+EXPORT_SYMBOL(dma_free_coherent);
 
 
 void consistent_sync(void *vaddr, size_t size, int direction)
@@ -92,3 +95,4 @@
 		break;
 	}
 }
+EXPORT_SYMBOL(consistent_sync);