usb: gadget: Move CONFIG_USB_GADGET_DUALSPEED to Kconfig

Move CONFIG_USB_GADGET_DUALSPEED option to Kconfig and
make all UDC controllers select USB_GADGET_DUALSPEED:
  - add next options to Kconfig selecting USB_GADGET_DUALSPEED:
    - USB_GADGET_ATMEL_USBA
    - USB_GADGET_DWC2_OTG
    - USB_DWC3
    - CI_UDC
  - make USB_MUSB_GADGET select USB_GADGET_DUALSPEED

While at it, make some related fixes:
  - remove DUALSPEED from configs that don't enable gadget support:
    - kwb.h
    - tseries.h
  - add missing USB_GADGET option to next configs:
    - novena_defconfig
    - pcm051_rev*_defconfig
    - xfi3_defconfig

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index cfd8ce8..5838d6e 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -36,6 +36,29 @@
 
 if USB_GADGET
 
+config USB_GADGET_ATMEL_USBA
+	bool "Atmel USBA"
+	select USB_GADGET_DUALSPEED
+	help
+	  USBA is the integrated high-speed USB Device controller on
+	  the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel.
+
+config USB_GADGET_DWC2_OTG
+	bool "DesignWare USB2.0 HS OTG controller (gadget mode)"
+	select USB_GADGET_DUALSPEED
+	help
+	  The Designware USB2.0 high-speed gadget controller
+	  integrated into many SoCs. Select this option if you want the
+	  driver to operate in Peripheral mode. This option requires
+	  USB_GADGET to be enabled.
+
+config CI_UDC
+	bool "ChipIdea device controller"
+	select USB_GADGET_DUALSPEED
+	help
+	  Say Y here to enable device controller functionality of the
+	  ChipIdea driver.
+
 config USB_GADGET_VBUS_DRAW
 	int "Maximum VBUS Power usage (2-500 mA)"
 	range 2 500
@@ -53,4 +76,8 @@
 	   This value will be used except for system-specific gadget
 	   drivers that have more specific information.
 
+# Selected by UDC drivers that support high-speed operation.
+config USB_GADGET_DUALSPEED
+	bool
+
 endif # USB_GADGET