Hey,

The new Sierra MC74XX modules are very very different to all previous Sierra 
modules. Among other things, they always work in raw-ip mode, and they also 
don't implement "DMS UIM" commands.

This series of patches introduces some initial support for these modules, by 
trying to modify the expected link layer protocol in the kernel to the one 
reported via WDA (if any), and also by implementing the "unlock required" check 
using "UIM Get Card Status" instead of "DMS UIM Get PIN status". There are 
multiple other operations based on "DMS UIM" that should be updated to use 
"UIM" service operations, but this one at least allows using the module when 
the SIM card has PIN request disabled.

There's also another patch which ends up requesting Static IP configuration on 
the newly connected Bearer if raw-ip is used; for now to avoid needing a DHCP 
client with raw-ip support.

Comments welcome!

--
Aleksander
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