dynamic_debug: add Jason Baron as maintainer

Add a maintainers entry for dynamic debug. Hopefully nobody
will object to me as maintainer...

Signed-off-by: Jason Baron <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

MAINTAINERS

···
 S:	Maintained
 F:	drivers/net/wan/dscc4.c
 
+DYNAMIC DEBUG
+M:	Jason Baron <[e-mail]>
+S:	Maintained
+F:	lib/dynamic_debug.c
+F:	include/linux/dynamic_debug.h
+
 DZ DECSTATION DZ11 SERIAL DRIVER
 M:	"Maciej W. Rozycki" <[e-mail]>
 S:	Maintained