SPI: tle620x power switch driver

Add support for the Infineon TLE62x0 series of low-side driver chips, such
as the TLE6220 or TLE6230.  These can be viewed as output GPIOs specialized
for power switching applications.  The driver provides a userspace
interface to those GPIOs, and to the switch status they provide.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 8929333..d9bd7f6 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -29,6 +29,7 @@
 # SPI protocol drivers (device/link on bus)
 obj-$(CONFIG_SPI_AT25)		+= at25.o
 obj-$(CONFIG_SPI_SPIDEV)	+= spidev.o
+obj-$(CONFIG_SPI_TLE62X0)	+= tle62x0.o
 # 	... add above this line ...
 
 # SPI slave controller drivers (upstream link)