Summary
The naming standard at https://cwiki.apache.org/confluence/display/NUTTX/Naming+FAQ requires that all MCU-private files begin with the name of the architecture, not up_.
This PR addresses only these name changes for the up_*.h files. There are only three, but almost 1680 files that include them:
up_arch.h
up_internal.h
up_vfork.h
The only change to the files is from including up_arch.h to arm_arch.h (for example).
The entire job required to be compatible with that Naming Convention will also require changing the naming of the up_() functions that are used only within arch/arm and board/arm.
Impact
There should be not impact of this change (other that one step toward more consistent naming).
Testing
stm32f4discovery:netnsh
Remove proxy #defines
Ensure the LSE(ON) etal are set and remembered in
a) A cold start (RTC_MAGIC invalid) of the RTC
b) A warm start (RTC_MAGIC valid) of the RTC but a clock change.
The change was needed because in bench testing a merge of the latest's STM32 53ec3ca (and friends) it became apparent that the
Sequence of operation is wrong in the reset of the Backup Domain in the RCC code. PWR is required before the Backup Domain
can be futzed with. !!!This Code should be tested on STM32 and if needed rippled to the STM32 families
