Fix compiler warnings

Author: PaulZC

src/ICM_20948.cpp

@@ -1705,16 +1705,7 @@ ICM_20948_Status_e ICM_20948_read_I2C(uint8_t reg, uint8_t *buff, uint32_t len,
   _i2c->write(reg);
   _i2c->endTransmission(false); // Send repeated start
 
-  uint32_t offset = 0;
   uint32_t num_received = _i2c->requestFrom(addr, len);
-  // while(_i2c->available()){
-  //     if(len > 0){
-  //         *(buff + offset) = _i2c->read();
-  //         len--;
-  //     }else{
-  //         break;
-  //     }
-  // }
 
   if (num_received == len)
   {

src/util/ICM_20948_C.c

@@ -2436,7 +2436,7 @@ ICM_20948_Status_e inv_icm20948_read_dmp_data(ICM_20948_Device_t *pdev, icm_2094
   return result;
 }
 
-static uint8_t sensor_type_2_android_sensor(enum inv_icm20948_sensor sensor)
+uint8_t sensor_type_2_android_sensor(enum inv_icm20948_sensor sensor)
 {
   switch (sensor)
   {

src/util/ICM_20948_C.h

@@ -274,7 +274,7 @@ extern int memcmp(const void *, const void *, size_t); // Avoid compiler warning
   ICM_20948_Status_e inv_icm20948_set_dmp_sensor_period(ICM_20948_Device_t *pdev, enum DMP_ODR_Registers odr_reg, uint16_t interval);
   ICM_20948_Status_e inv_icm20948_enable_dmp_sensor(ICM_20948_Device_t *pdev, enum inv_icm20948_sensor sensor, int state);     // State is actually boolean
   ICM_20948_Status_e inv_icm20948_enable_dmp_sensor_int(ICM_20948_Device_t *pdev, enum inv_icm20948_sensor sensor, int state); // State is actually boolean
-  static uint8_t sensor_type_2_android_sensor(enum inv_icm20948_sensor sensor);
+  uint8_t sensor_type_2_android_sensor(enum inv_icm20948_sensor sensor);
   enum inv_icm20948_sensor inv_icm20948_sensor_android_2_sensor_type(int sensor);
 
   ICM_20948_Status_e inv_icm20948_read_dmp_data(ICM_20948_Device_t *pdev, icm_20948_DMP_data_t *data);