Target support for stm32l0's and stm32l1's including option bytes and
data EEPROM. This module will superceed the previous stm32l1 driver.
o Program flash write and erase.
o Options modification and interpretive status.
o Stubs for program flash writes and erases. Stubs are modestly
faster than non-stub version. The stm32l0 will not execute stubs
when the MCU has crashed. A monitor option may be used to force
non-stub flash writes.
o Stubs generated from C++ code and converted to arrays of half-words.
o Writes to data EEPROM supoprted when loading segments.
o EEPROM data monitor command to write words.
o Stubs supported on stm32l1.