bus: mhi: pci_generic: Add mru_default for Cinterion MV31-W

For default mechanism, product would use default MRU 3500 if
they didn't define it. But for Cinterion MV31-W, 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: Modified the commit message to reflect Cinterion MV31-W and CCed stable]
Fixes: 87693e0 ("bus: mhi: pci_generic: Add Cinterion MV31-W PCIe to MHI")
Cc: [email protected] # v5.14 +
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

@@ -402,6 +402,7 @@ static const struct mhi_pci_dev_info mhi_mv31_info = {
 	.config = &modem_mv31_config,
 	.bar_num = MHI_PCI_DEFAULT_BAR_NUM,
 	.dma_data_width = 32,
+	.mru_default = 32768,
 };
 
 static const struct mhi_channel_config mhi_sierra_em919x_channels[] = {