bus: mhi: pci_generic: Add mru_default for Foxconn SDX55

For default mechanism, product would use default MRU 3500 if
they didn't define it. But for Foxconn SDX55, there is a known
issue which MRU 3500 would lead to data connection lost.
So we align it with Qualcomm default MRU settings.

Link: https://lore.kernel.org/r/[email protected]
[mani: Added pci_generic prefix to subject and CCed stable]
Fixes: aac4265 ("bus: mhi: pci_generic: Introduce Foxconn T99W175 support")
Cc: [email protected] # v5.12+
Reviewed-by: Manivannan Sadhasivam <[email protected]>
Signed-off-by: Slark Xiao <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: SlarkXiao

drivers/bus/mhi/pci_generic.c

@@ -366,6 +366,7 @@ static const struct mhi_pci_dev_info mhi_foxconn_sdx55_info = {
 	.config = &modem_foxconn_sdx55_config,
 	.bar_num = MHI_PCI_DEFAULT_BAR_NUM,
 	.dma_data_width = 32,
+	.mru_default = 32768,
 	.sideband_wake = false,
 };