Compilation warnings: Grove_Sunlight_Sensor

[matsujirushi]

• Si115X.cpp:15:26: warning: comparison is always false due to limited range of data type [-Wtype-limits]
• Si115X.cpp:124:22: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'unsigned int'} [-Wsign-compare]

| Wio_Tracker_1110_Examples | grove_light_si1151.ino              | warnings  |  5.92s |
/home/runner/.arduino15/packages/Seeeduino/hardware/nrf52/1.1.5/libraries/Grove_Sunlight_Sensor/Si115X.cpp: In member function 'void Si115X::config_channel(uint8_t, uint8_t*)':
/home/runner/.arduino15/packages/Seeeduino/hardware/nrf52/1.1.5/libraries/Grove_Sunlight_Sensor/Si115X.cpp:15:26: warning: comparison is always false due to limited range of data type [-Wtype-limits]
   15 |     if(len != 4 || index < 0 || index > 5)
      |                    ~~~~~~^~~
/home/runner/.arduino15/packages/Seeeduino/hardware/nrf52/1.1.5/libraries/Grove_Sunlight_Sensor/Si115X.cpp: In member function 'int Si115X::get_int_from_bytes(uint8_t*, size_t)':
/home/runner/.arduino15/packages/Seeeduino/hardware/nrf52/1.1.5/libraries/Grove_Sunlight_Sensor/Si115X.cpp:124:22: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'unsigned int'} [-Wsign-compare]
  124 |     for(int i = 0; i < len; i++){
      |                    ~~^~~~~

[KillingJacky]

Thank you for the fixing Seeed-Studio/Grove_Sunlight_Sensor#12