usb: misc: usb3503: Convert to regmap

This will give access to the diagnostic infrastructure regmap has but
the main point is to support future refactoring.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig
index ca91420..e2b21c1 100644
--- a/drivers/usb/misc/Kconfig
+++ b/drivers/usb/misc/Kconfig
@@ -246,5 +246,6 @@
 config USB_HSIC_USB3503
        tristate "USB3503 HSIC to USB20 Driver"
        depends on I2C
+       select REGMAP
        help
          This option enables support for SMSC USB3503 HSIC to USB 2.0 Driver.