Reduced Power Consumption is available for MR-O-QPSK and
MR-FSK.
In this mode the receiver will be turned off periodically,
defaulting to a 50% duty cycle.
This reduces power consumption when in IDLE RX by almost 50%
and is therefore enabled by default.
This changes the prefixes of the symbols generated from USEMODULE and
USEPKG variables. The changes are as follow:
KCONFIG_MODULE_ => KCONFIG_USEMODULE_
KCONFIG_PKG_ => KCONFIG_USEPKG_
MODULE_ => USEMODULE_
PKG_ => USEPKG_
Some hardware designers like to include filtering capacitors into reset
lines in order to protect against ESD or other pulses.
This increases the raise time of the reset signal. To still reach the
required 16 µs reset pulse width, we thus have to increase the reset pulse
width via board config.
