PCI: don't enable too much HT MSI mapping
Impact: fix bug Prakash reported that his c51-mcp51 system ondie sound card doesn't work MSI but if he hack out the HT-MSI on mcp51, the MSI will work well with sound card. This patch reworks nv_msi_ht_cap_quirk() and will only avoid enabling ht_msi on devices following that root device. Reported-by: NPrakash Punnoor <prakash@punnoor.de> Signed-off-by: NYinghai Lu <yinghai@kernel.org> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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