[Tracking] cc13x2_cc26x2 drivers support

[jeandudey]

Description

This issue is intended to track progress for the support of the cc13x2_cc26x2 and the features that need to be implemented.

• Add a SetupTrimDevice implementation. This should be called after the hardware bootloader finishes boot and starts the firmware (cpu_init). It sets some registers to good defaults.
  • Reference implementation
  • cc26x2_cc13x2: trim device registers on cpu_init. #13816
• Use ROM driverlib code to reduce binary size. The CC26xx/CC13xx MCUs have a minimal implementation of the TI SDK driverlib to reduce binary size with common code.
  • ROM API definitions
• RF driver. Still being worked on [WIP] cpu/cc26x2_cc13x2: add sub-1-ghz netdev driver #13295 . WIP
• MTD implementation for flash memory.
• Compiling and linking CCFG. cpu/cc26xx_cc13xx: add & link CCFG configuration  #14219
  • Explore the usage of the bootloader backdoor to use a script like cc2538-bsl (should work of the box if I'm not mistaken)
• SPI driver.
  • MTD driver for MX25xx SPI flash included on SimpleLink launchpads.
    • MX25xx datasheet
• I2C driver. cc26x0 already has an implementation, that code can be generalized and put under cc26xx_cc13xx. PR cc26xx_cc13xx: add periph_i2c implementation #14128

Useful links

• Versioned CC26xx/CC13xx SDK
• CC13x2, CC26x2 TRM