Staging: line6: add to the build

This adds the line6 driver to the build system.

Cc: Markus Grabner <grabner@icg.tugraz.at>
Cc: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index b69703e..2a859ee 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -38,3 +38,4 @@
 obj-$(CONFIG_IDE_PHISON)	+= phison/
 obj-$(CONFIG_PLAN9AUTH)		+= p9auth/
 obj-$(CONFIG_HECI)		+= heci/
+obj-$(CONFIG_LINE6_USB)		+= line6/