This commit adds support for CPU max freqeuency rating
bits in CPU. Bootloader will now print an error if attempting
to 160MHz rated ESP32 at 240MHz.
EFUSE_CHIP_VER_RESERVE has been replaced by the
frequency rating bits. Dependancies on EFUSE_CHIP_VER_RESERVE
have been changed to use EFUSE_CHIP_VER_PKG
This commit removes the lookup table mode due to inferior performance when compared
to linear mode under attenuation 0, 1 and 2. However small portions of the lookup table
are kept for the higher voltages of atten 3 (above ADC reading 2880). That voltage range
in atten 3 has non linear characteristics making the LUT performan better than linear mode.
This commit updates the esp_adc_cal ocmponent to support new calibration methods
which utilize calibratoin values stored in eFuse. This commit includes LUT mode
