watchdog: remove bfin_wdt driver

The blackfin architecture is getting removed, so this driver has
become obsolete.
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Aaron Wu <aaron.wu@analog.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/watchdog/watchdog-parameters.txt

@@ -55,11 +55,6 @@ wdt_time: Watchdog time in seconds. (default=30)
 nowayout: Watchdog cannot be stopped once started
 	(default=kernel config parameter)
 -------------------------------------------------
-bfin_wdt:
-timeout: Watchdog timeout in seconds. (1<=timeout<=((2^32)/SCLK), default=20)
-nowayout: Watchdog cannot be stopped once started
-	(default=kernel config parameter)
--------------------------------------------------
 coh901327_wdt:
 margin: Watchdog margin in seconds (default 60s)
 -------------------------------------------------

drivers/watchdog/Kconfig

@@ -815,19 +815,6 @@ config SPRD_WATCHDOG
 	  Say Y here to include watchdog timer supported
 	  by Spreadtrum system.
 
-# BLACKFIN Architecture
-
-config BFIN_WDT
-	tristate "Blackfin On-Chip Watchdog Timer"
-	depends on BLACKFIN
-	---help---
-	  If you say yes here you will get support for the Blackfin On-Chip
-	  Watchdog Timer. If you have one of these processors and wish to
-	  have watchdog support enabled, say Y, otherwise say N.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called bfin_wdt.
-
 # X86 (i386 + ia64 + x86_64) Architecture
 
 config ACQUIRE_WDT

drivers/watchdog/Makefile

@@ -91,9 +91,6 @@ obj-$(CONFIG_UNIPHIER_WATCHDOG) += uniphier_wdt.o
 obj-$(CONFIG_RTD119X_WATCHDOG) += rtd119x_wdt.o
 obj-$(CONFIG_SPRD_WATCHDOG) += sprd_wdt.o
 
-# BLACKFIN Architecture
-obj-$(CONFIG_BFIN_WDT) += bfin_wdt.o
-
 # X86 (i386 + ia64 + x86_64) Architecture
 obj-$(CONFIG_ACQUIRE_WDT) += acquirewdt.o
 obj-$(CONFIG_ADVANTECH_WDT) += advantechwdt.o