alpha: sys_sio: fix misspelled ifdefs

definitions of avanti_mv and noname_mv (and associated ALIAS_MV)
are conditional upon the wrong thing - it should be
CONFIG_ALPHA_{AVANTI,NONAME}_CH, not CONFIG_ALPHA_{AVANTI,NONAME}.

The former is a system type; the latter is for the bits shared
by AVANTI with XL and NONAME with ALPHA_BOOK1 resp.

We want all those machine vectors defined (but not aliased - see
ALIAS_MV() definition for details) for GENERIC build; for
system-specfic builds we want only one mv, so avanti_mv should *not*
be there for XL; it certainly should not be have alpha_mv aliased to
it on such config - xl_mv will be there and alpha_mv can't be aliased
to both of those.

The same goes for Noname vs. Alphabook1.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Acked-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/alpha/kernel/sys_sio.c

@@ -360,7 +360,7 @@ struct alpha_machine_vector alphabook1_mv __initmv = {
 ALIAS_MV(alphabook1)
 #endif
 
-#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_AVANTI)
+#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_AVANTI_CH)
 struct alpha_machine_vector avanti_mv __initmv = {
 	.vector_name		= "Avanti",
 	DO_EV4_MMU,
@@ -389,7 +389,7 @@ struct alpha_machine_vector avanti_mv __initmv = {
 ALIAS_MV(avanti)
 #endif
 
-#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_NONAME)
+#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_NONAME_CH)
 struct alpha_machine_vector noname_mv __initmv = {
 	.vector_name		= "Noname",
 	DO_EV4_MMU,