[PATCH] mips: fix SERIAL_TXX9 dependencies

Ask for SERIAL_TXX9 only on those devices that actually have one.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/mips/Kconfig

@@ -891,6 +891,7 @@ config TOSHIBA_RBTX4927
 	bool "Support for Toshiba TBTX49[23]7 board"
 	depends on MIPS32
 	select DMA_NONCOHERENT
+	select HAS_TXX9_SERIAL
 	select HW_HAS_PCI
 	select I8259
 	select ISA
@@ -1013,6 +1014,7 @@ config MIPS_GT64120
 config MIPS_TX3927
 	bool
 	depends on TOSHIBA_JMR3927
+	select HAS_TXX9_SERIAL
 	default y
 
 config PCI_MARVELL

drivers/serial/Kconfig

@@ -794,8 +794,12 @@ config SERIAL_M32R_PLDSIO
 
 config SERIAL_TXX9
 	bool "TMPTX39XX/49XX SIO support"
-	depends on MIPS || PCI
+	depends HAS_TXX9_SERIAL
 	select SERIAL_CORE
+	default y
+
+config HAS_TXX9_SERIAL
+	bool
 
 config SERIAL_TXX9_CONSOLE
 	bool "TMPTX39XX/49XX SIO Console support"