usb: dwc3: Allow building USB_DWC3_QCOM without EXTCON

Keep EXTCON support optional, as some platforms do not need it.

Do the same for USB_DWC3_OMAP while we're at it.

Fixes: 3def403 ("usb: dwc3: add EXTCON dependency for qcom")
Signed-off-by: Marc Gonzalez <marc.w.gonzalez@free.fr>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/dwc3/Kconfig

@@ -54,7 +54,8 @@ comment "Platform Glue Driver Support"
 
 config USB_DWC3_OMAP
 	tristate "Texas Instruments OMAP5 and similar Platforms"
-	depends on EXTCON && (ARCH_OMAP2PLUS || COMPILE_TEST)
+	depends on ARCH_OMAP2PLUS || COMPILE_TEST
+	depends on EXTCON || !EXTCON
 	depends on OF
 	default USB_DWC3
 	help
@@ -115,7 +116,8 @@ config USB_DWC3_ST
 
 config USB_DWC3_QCOM
 	tristate "Qualcomm Platform"
-	depends on EXTCON && (ARCH_QCOM || COMPILE_TEST)
+	depends on ARCH_QCOM || COMPILE_TEST
+	depends on EXTCON || !EXTCON
 	depends on OF
 	default USB_DWC3
 	help