usb: ehci-brcm: fix sleep during atomic

usb: ehci-brcm: fix sleep during atomic

echi_brcm_wait_for_sof() gets called after disabling interrupts
in ehci_brcm_hub_control(). Use the atomic version of poll_timeout
to fix the warning.

Fixes: 9df231511bd6 ("usb: ehci: Add new EHCI driver for Broadcom STB SoC's")
Cc: stable <stable@kernel.org>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20260318185707.2588431-1-justin.chen@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>