[PATCH] um: fix undefined reference to hweight32

Build fix for user mode linux.

Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/um/Kconfig.i386 b/arch/um/Kconfig.i386
index ef79ed2..85e6a55 100644
--- a/arch/um/Kconfig.i386
+++ b/arch/um/Kconfig.i386
@@ -52,3 +52,8 @@
 config ARCH_REUSE_HOST_VSYSCALL_AREA
 	bool
 	default y
+
+config GENERIC_HWEIGHT
+	bool
+	default y
+