usbdebug: Halt host controller before resetting it

Resetting an EHCI controller when it is not halted can have
undefined behaviour. This mostly fixes a case where calling
usbdebug_init() twice would fail to reset the USB dongle device
properly.

On amd/persimmon it still requires one extra retry, but at least it
is now possible to have usbdebug enabled for both romstage and
ramstage.

Change-Id: Ib0e6e5a0167404f68af2edf112306fdb8def0be9
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/3862
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>

0 files changed, 0 insertions, 0 deletions