x86: geode: define geode_has_vsa2() even if CONFIG_MGEODE_LX is not set

We want drivers to be able to use geode_has_vsa2 without having to worry
about what model geode is being compiled for.  This patch ensures that
geode_has_vsa2 is always defined.
Signed-off-by: Andres Salomon <dilinger@debian.org>
Cc: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

include/asm-x86/geode.h

@@ -185,7 +185,14 @@ static inline int is_geode(void)
 	return (is_geode_gx() || is_geode_lx());
 }
 
+#ifdef CONFIG_MGEODE_LX
 extern int geode_has_vsa2(void);
+#else
+static inline int geode_has_vsa2(void)
+{
+	return 0;
+}
+#endif
 
 /* MFGPTs */