Add a feature flag in Uhci & Ehci to disable legacy USB SMI.
[Impaction]:
Platform integrator can choose to legacy USB SMI or not.
[Reference Info]
EDK Tracker 1082
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5081 6f19259b-4bc3-4df7-8a09-765794883524
Don't need disable the legacy USB SMI in UHCI and EHCI, which is only required by UoL.
[Impaction]:
Uhci and Ehci driver default don't need disable the legacy USB SMI.
[Reference Info]:
EDK tracker 1082
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4850 6f19259b-4bc3-4df7-8a09-765794883524
PciIoAttributes() in PciIo.c treats EFI_PCI_DEVICE_ENABLE specially so that when EFI_PCI_DEVICE_ENABLE is passed in, only the supported bits of driver will be enabled. Now many drivers use EFI_PCI_DEVICE_ENABLE to enable PCI device even if some of them don't support some of the attributes like EFI_PCI_IO_ATTRIBUTE_MEMORY. This doesn't conform to UEFI 2.0 spec.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4115 6f19259b-4bc3-4df7-8a09-765794883524