altair: fix warnings with -Wdiscarded-qualifiers
altair/mm-plugin-altair-lte.c:44:7: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
44 | { "AT", 7, mm_port_probe_response_processor_is_at },
| ^~~~
altair/mm-plugin-altair-lte.c:45:7: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
45 | { "AT", 7, mm_port_probe_response_processor_is_at },
| ^~~~
altair/mm-plugin-altair-lte.c:46:7: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
46 | { "AT", 7, mm_port_probe_response_processor_is_at },
| ^~~~
altair/mm-broadband-modem-altair-lte.c:886:5: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
886 | { "%STATCM=1", 10, FALSE, response_processor_no_result_stop_on_error },
| ^~~~~~~~~~~
altair/mm-broadband-modem-altair-lte.c:887:5: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
887 | { "%NOTIFYEV=\"SIMREFRESH\",1", 10, FALSE, NULL },
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
altair/mm-broadband-modem-altair-lte.c:888:5: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
888 | { "%PCOINFO=1", 10, FALSE, NULL },
| ^~~~~~~~~~~~
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