[PATCH] powerpc: Call find_legacy_serial_ports() if we enable CONFIG_SERIAL_8250

In setup_arch and setup_system call find_legacy_serial_ports() if we
build in support for 8250 serial ports instead of basing it on PPC_MULTIPLATFORM.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 419e0b9..98e9f05 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -472,7 +472,7 @@
 	 * hash table management for us, thus ioremap works. We do that early
 	 * so that further code can be debugged
 	 */
-#ifdef CONFIG_PPC_MULTIPLATFORM
+#ifdef CONFIG_SERIAL_8250
 	find_legacy_serial_ports();
 #endif