MLK-9617-9 usb: core: hub: use a_set_b_hnp_en and b_hnp_en for otg fsm mode

MLK-9617-9 usb: core: hub: use a_set_b_hnp_en and b_hnp_en for otg fsm mode

Use a_set_b_hnp_en to identify if a host can succeed to set b_hnp_enable
for B device, use b_hnp_enable flag to identify if the connected OTG device
is HNP capable. So if the connected otg device is HNP capable but b_hnp_enable
is not set for A host, the host which support HNP polling should continue
enumeration to see if the B device can talk to it later by hnp polling.

Signed-off-by: Li Jun <b47624@freescale.com>
(cherry picked from commit b715d0773eea212a25d6b8c5d94530e12935fdaf)
(cherry picked from commit 454369742ce4dec01d89c946a28c3069fc23bbea)