serial_txx9: Use assigned device numbers

The serial_txx9 driver have abused device numbers (major 4, minor 128) if
CONFIG_SERIAL_TXX9_STDSERIAL was not set.  This patch makes the driver use
proper device numbers assigned for it (major 204, minor 196-203).  I
suppose a typical user of this driver set CONFIG_SERIAL_TXX9_STDSERIAL to Y
(i.e.  use "ttyS0"), so this patch would not cause big compatibility issue.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/serial/serial_txx9.c

@@ -62,7 +62,7 @@
 
 #include <asm/io.h>
 
-static char *serial_version = "1.08";
+static char *serial_version = "1.09";
 static char *serial_name = "TX39/49 Serial driver";
 
 #define PASS_LIMIT	256
@@ -70,13 +70,14 @@ static char *serial_name = "TX39/49 Serial driver";
 #if !defined(CONFIG_SERIAL_TXX9_STDSERIAL)
 /* "ttyS" is used for standard serial driver */
 #define TXX9_TTY_NAME "ttyTX"
-#define TXX9_TTY_MINOR_START	(64 + 64)	/* ttyTX0(128), ttyTX1(129) */
+#define TXX9_TTY_MINOR_START	196
+#define TXX9_TTY_MAJOR	204
 #else
 /* acts like standard serial driver */
 #define TXX9_TTY_NAME "ttyS"
 #define TXX9_TTY_MINOR_START	64
-#endif
 #define TXX9_TTY_MAJOR	TTY_MAJOR
+#endif
 
 /* flag aliases */
 #define UPF_TXX9_HAVE_CTS_LINE	UPF_BUGGY_UART