David Dai b7688590b8 Change rgblight_get_mode & rgb_matrix_get_mode's return type to uint8_t. (#4747)
* Change rgblight_get_mode's return type to uint8_t.

Since rgblight_get_mode() is just returning rgblight_config_t.mode,
it should match rgblight_config_t.mode's type: uint8_t.

* Update rgb_matrix_get_mode to return uint8_t.
2018-12-31 08:42:58 -08:00
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