Revert "staging: octeon-usb: delete the octeon usb host controller driver"

This reverts commit 95ace52e4036482da1895b6e19f15141802cc3dd. Re-instate
the code so subsequent commits can clean it up and get it building
properly.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20200205001116.14096-2-chris.packham@alliedtelesis.co.nz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/Kconfig

@@ -42,6 +42,8 @@ source "drivers/staging/rtl8188eu/Kconfig"
 
 source "drivers/staging/rts5208/Kconfig"
 
+source "drivers/staging/octeon-usb/Kconfig"
+
 source "drivers/staging/vt6655/Kconfig"
 
 source "drivers/staging/vt6656/Kconfig"

drivers/staging/Makefile

@@ -12,6 +12,7 @@ obj-$(CONFIG_R8712U)		+= rtl8712/
 obj-$(CONFIG_R8188EU)		+= rtl8188eu/
 obj-$(CONFIG_RTS5208)		+= rts5208/
 obj-$(CONFIG_NETLOGIC_XLR_NET)	+= netlogic/
+obj-$(CONFIG_OCTEON_USB)	+= octeon-usb/
 obj-$(CONFIG_VT6655)		+= vt6655/
 obj-$(CONFIG_VT6656)		+= vt6656/
 obj-$(CONFIG_VME_BUS)		+= vme/

drivers/staging/octeon-usb/Kconfig

@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0
+config OCTEON_USB
+	tristate "Cavium Networks Octeon USB support"
+	depends on CAVIUM_OCTEON_SOC && USB
+	help
+	  This driver supports USB host controller on some Cavium
+	  Networks' products in the Octeon family.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called octeon-hcd.
+

drivers/staging/octeon-usb/Makefile

@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-${CONFIG_OCTEON_USB} := octeon-hcd.o

drivers/staging/octeon-usb/TODO

@@ -0,0 +1,8 @@
+This driver is functional and has been tested on EdgeRouter Lite,
+D-Link DSR-1000N and EBH5600 evaluation board with USB mass storage.
+
+TODO:
+	- kernel coding style
+	- checkpatch warnings
+
+Contact: Aaro Koskinen <aaro.koskinen@iki.fi>