[WATCHDOG] Kconfig clean up

fixed some more trailing spaces.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

drivers/char/watchdog/Kconfig

@@ -505,7 +505,6 @@ config SBC_EPX_C3_WATCHDOG
 	  To compile this driver as a module, choose M here: the
 	  module will be called sbc_epx_c3.
 
-
 # PowerPC Architecture
 
 config 8xx_WDT