iommu/amd: Add PCI segment support for ivrs_[ioapic/hpet/acpihid] commands

[ Upstream commit bbe3a106580c21bc883fb0c9fa3da01534392fe8 ]

By default, PCI segment is zero and can be omitted. To support system
with non-zero PCI segment ID, modify the parsing functions to allow
PCI segment ID.

Co-developed-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Link: https://lore.kernel.org/r/20220706113825.25582-33-vasant.hegde@amd.com


Signed-off-by: Joerg Roedel <jroedel@suse.de>
Stable-dep-of: b6b26d86c61c ("iommu/amd: Add a length limitation for the ivrs_acpihid command-line parameter")
Signed-off-by: Sasha Levin <sashal@kernel.org>