Updates nrfx to the recently released version and adjusts its glue
layer accordingly.
License headers are slightly corrected to match the license text at
https://opensource.org/licenses/BSD-3-Clause.
Deprecated MDK files nrf51xxx_peripherals.h are removed, since they
are replaced by a common file named nrf51_peripherals.h.
Origin: nrfx
License: BSD 3-Clause
URL: https://github.com/NordicSemiconductor/nrfx/tree/v1.0.0
commit: cf78ebfea1719d85cf4018fe6c08cc73fe5ec719
Purpose: Provide peripheral drivers for Nordic SoCs
Maintained-by: External
Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>
3dd8b903d2