Staging: add Kconfig entries and Makefile infrastructure

This hooks up the drivers/staging directory to the build system

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/Makefile b/drivers/Makefile
index 2735bde..46c8681 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -99,3 +99,4 @@
 obj-$(CONFIG_SSB)		+= ssb/
 obj-$(CONFIG_VIRTIO)		+= virtio/
 obj-$(CONFIG_REGULATOR)		+= regulator/
+obj-$(CONFIG_STAGING)		+= staging/