dwc3: core: Enable GUCTL1 chicken bit 9 for correcting Inter Packet Delay(IPD)

dwc3: core: Enable GUCTL1 chicken bit 9 for correcting Inter Packet Delay(IPD)

SNPS controller when configureed in HOST mode maintains Inter Packet
Delay (IPD) of ~380ns which works with most of super-speed hubs except
VIA-LAB hubs. When IPD is ~380ns HOST controller fails to enumerate FS/LS
devices when connected behind VIA-LAB hubs.
Enabling bit 9 of GUCTL1 enables the workaround in HW to reduce the ULPI
clock latency by 1 cycle, thus reducing the IPD (~360ns) and making
controller enumerate FS/LS devices connected behind VIA-LAB.
This patch fixes the same.

Signed-off-by: Anurag Kumar Vulisha <anuragku@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>