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
nrf52 updates
board/arm/nrf52/nrf52832-dk: use the on-board virtual COM pins as default UART0 configuration
board/arm/nrf52: initial support for the nrf52840-dk board
board/arm/nrf52: initial support for the nrf52840-dk dongle board
arch/arm/src/nrf52: add support for port 1 GPIO
arch/arm/src/nrf52: initial support for UART1
arch/arm/src/nrf52: add UICR definitions
Approved-by: Gregory Nutt <gnutt@nuttx.org>