Staging: sep: do not select the driver by default

The Kconfig file should not have 'y' as the default, especially
as the driver will crash a machine if it is loaded and the hardware
is not present.
Reported-by: NStephen Rothwell <sfr@canb.auug.org.au>
Cc: Mark Allyn <mark.a.allyn@intel.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/sep/Kconfig

 config DX_SEP
 	tristate "Discretix SEP driver"
 	depends on PCI
-	default y
 	help
 	  Discretix SEP driver; used for the security processor subsystem
 	  on bard the Intel Mobile Internet Device.