nokia: fix warnings with -Wdiscarded-qualifiers
nokia/mm-plugin-nokia.c:37:7: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
37 | { "ATE1 E0", 3, mm_port_probe_response_processor_is_at },
| ^~~~~~~~~
nokia/mm-plugin-nokia.c:38:7: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
38 | { "ATE1 E0", 3, mm_port_probe_response_processor_is_at },
| ^~~~~~~~~
nokia/mm-plugin-nokia.c:39:7: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
39 | { "ATE1 E0", 3, mm_port_probe_response_processor_is_at },
| ^~~~~~~~~
nokia/mm-plugin-nokia-icera.c:36:7: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
36 | { "ATE1 E0", 3, mm_port_probe_response_processor_is_at },
| ^~~~~~~~~
nokia/mm-plugin-nokia-icera.c:37:7: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
37 | { "ATE1 E0", 3, mm_port_probe_response_processor_is_at },
| ^~~~~~~~~
nokia/mm-plugin-nokia-icera.c:38:7: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
38 | { "ATE1 E0", 3, mm_port_probe_response_processor_is_at },
| ^~~~~~~~~