FROMGIT: usb: dwc3: core: Defer the probe until USB power supply ready

Currently, DWC3 driver attempts to acquire the USB power supply only
once during the probe. If the USB power supply is not ready at that
time, the driver simply ignores the failure and continues the probe,
leading to permanent non-functioning of the gadget vbus_draw callback.

Address this problem by delaying the dwc3 driver initialization until
the USB power supply is registered.

Fixes: 6f0764b5 ("usb: dwc3: add a power supply for current control")
Cc: stable <stable@kernel.org>
Signed-off-by: Kyle Tso <kyletso@google.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20250115044548.2701138-1-kyletso@google.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Bug: 336373394
Bug: 374243207
(cherry picked from commit 66e0ea34
 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git/

 usb-testing)
Change-Id: Ia27fc7f136ae1c6f90b112a4a64bfaf59f3e9cbf
Signed-off-by: Kyle Tso <kyletso@google.com>