mfd: Move ssbi driver into drivers/mfd

There is no reason for ssbi to have its own top-level driver directory
when the only users of this interface are all MFD drivers. The only
mainline driver using it at the moment (PM8921) is marked broken and in
fact does not compile. I have verified that fixing the trivial build
breakage in pm8921 links in the new ssbi code just fine, but that
can be a separate patch.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/Kconfig b/drivers/Kconfig
index 9953a42..b8ec9cf 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -52,8 +52,6 @@
 
 source "drivers/spi/Kconfig"
 
-source "drivers/ssbi/Kconfig"
-
 source "drivers/hsi/Kconfig"
 
 source "drivers/pps/Kconfig"
diff --git a/drivers/Makefile b/drivers/Makefile
index 130abc1..bbf3810 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -117,7 +117,6 @@
 obj-$(CONFIG_CRYPTO)		+= crypto/
 obj-$(CONFIG_SUPERH)		+= sh/
 obj-$(CONFIG_ARCH_SHMOBILE)	+= sh/
-obj-$(CONFIG_SSBI)		+= ssbi/
 ifndef CONFIG_ARCH_USES_GETTIMEOFFSET
 obj-y				+= clocksource/
 endif
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index d54e985..013b094 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -419,7 +419,8 @@
 
 config MFD_PM8921_CORE
 	tristate "Qualcomm PM8921 PMIC chip"
-	depends on SSBI && BROKEN
+	depends on (ARCH_MSM || HEXAGON)
+	depends on BROKEN
 	select MFD_CORE
 	select MFD_PM8XXX
 	help
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 718e94a..31d0f97 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -140,7 +140,7 @@
 
 obj-$(CONFIG_MFD_CS5535)	+= cs5535-mfd.o
 obj-$(CONFIG_MFD_OMAP_USB_HOST)	+= omap-usb-host.o omap-usb-tll.o
-obj-$(CONFIG_MFD_PM8921_CORE) 	+= pm8921-core.o
+obj-$(CONFIG_MFD_PM8921_CORE) 	+= pm8921-core.o ssbi.o
 obj-$(CONFIG_MFD_PM8XXX_IRQ) 	+= pm8xxx-irq.o
 obj-$(CONFIG_TPS65911_COMPARATOR)	+= tps65911-comparator.o
 obj-$(CONFIG_MFD_TPS65090)	+= tps65090.o
diff --git a/drivers/ssbi/ssbi.c b/drivers/mfd/ssbi.c
similarity index 100%
rename from drivers/ssbi/ssbi.c
rename to drivers/mfd/ssbi.c
diff --git a/drivers/ssbi/Kconfig b/drivers/ssbi/Kconfig
deleted file mode 100644
index 1ae4040..0000000
--- a/drivers/ssbi/Kconfig
+++ /dev/null
@@ -1,16 +0,0 @@
-#
-# SSBI bus support
-#
-
-menu "Qualcomm MSM SSBI bus support"
-
-config SSBI
-	tristate "Qualcomm Single-wire Serial Bus Interface (SSBI)"
-	help
-	  If you say yes to this option, support will be included for the
-	  built-in SSBI interface on Qualcomm MSM family processors.
-
-	  This is required for communicating with Qualcomm PMICs and
-	  other devices that have the SSBI interface.
-
-endmenu
diff --git a/drivers/ssbi/Makefile b/drivers/ssbi/Makefile
deleted file mode 100644
index 38fb70c..0000000
--- a/drivers/ssbi/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-obj-$(CONFIG_SSBI) += ssbi.o