[PATCH] ia64: __ia64_memcpy_fromio() may be missing from kernel

When building a highly modular, non-generic kernel it can happen that
arch/ia64/lib/io.o is not included in the image because nothing built-in
needs __ia64_memcpy_fromio, etc., yet it may be called from a module.  We
should force it to be linked in.

arch/ia64/lib/Makefile

@@ -2,11 +2,13 @@
 # Makefile for ia64-specific library routines..
 #
 
+obj-y := io.o
+
 lib-y := __divsi3.o __udivsi3.o __modsi3.o __umodsi3.o			\
 	__divdi3.o __udivdi3.o __moddi3.o __umoddi3.o			\
 	checksum.o clear_page.o csum_partial_copy.o copy_page.o		\
 	clear_user.o strncpy_from_user.o strlen_user.o strnlen_user.o	\
-	flush.o io.o ip_fast_csum.o do_csum.o				\
+	flush.o ip_fast_csum.o do_csum.o				\
 	memset.o strlen.o swiotlb.o
 
 lib-$(CONFIG_ITANIUM)	+= copy_page.o copy_user.o memcpy.o