[Replicant] [libsamsung-ipc] nv_data-imei compilation fixes for Replicant 6

[Denis 'GNUtoo' Carikli]

Hi,

The nv_data-imei utility is not built by default on Replicant 6.0 because
it only supports devices that are not supported by Replicant 6.0 (like
the Nexus S).

When writing and building another tool to do tests on Replicant 11 I
found that both tools had similar issues (a missing header) on Android.

Along the way I also found that nv_data-imei needed more fixes to compile
on Replicant 6.0.

Some warnings still persist on Replicant 6.0, however none are emmited on
Replicant 11 or GNU/Linux (even with scripts/guix.scm).

I'll try to remmeber to check if the the rest of the warnings are relevant
and if they are, address them, later on.

In addition to the patch that will follow in a response to
this mail, here's an URL to the see the patch in a web interface:
https://git.replicant.us/contrib/GNUtoo/hardware_replicant_libsamsung-ipc/commit/?id=89bd4a5d1e07e63f9f0f72c02dab81329454b26e

And here's how to get it in a git repository:
git clone https://git.replicant.us/GNUtoo/hardware_replicant_libsamsung-ipc
cd hardware_replicant_libsamsung-ipc
git show 89bd4a5d1e07e63f9f0f72c02dab81329454b26e

Denis.