Some platforms make use of VBUS control over PHY which means controller
driver has to access PHY registers to turn on/off VBUS line.This patch
adds support for such platforms in chipidea.

Flag 'CI_HDRC_PHY_VBUS_CONTROL' added to support VBus control feature.
Acked-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Piyush Mehta <piyush.mehta@xilinx.com>
Signed-off-by: Piyush Mehta <piyush.mehta@amd.com>
Link: https://lore.kernel.org/r/20220822054051.2941282-1-piyush.mehta@amd.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>