packagegroups: add packages related to RT

This commit adds real time test tools to the system.

The hwlatedetct is a program that controls the kernel
hardware latency detector module. This is used to detect
large system latencies independent of Linux itself.

The rt-tests package is a test suite that includes the cyclictest
tool to measure the difference between a thread's intended
wake-up time and the time at which it actually wakes up.

Signed-off-by: Mike Engel <Mike.Engel@digi.com>

meta-digi-dey/recipes-core/packagegroups/packagegroup-dey-core.bb

@@ -43,6 +43,7 @@ RDEPENDS:${PN} = "\
     ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', 'firmwared', '',d)} \
     ${@bb.utils.contains("MACHINE_FEATURES", "keyboard", "${VIRTUAL-RUNTIME_keymaps}", "", d)} \
     ${@bb.utils.contains("MACHINE_FEATURES", "touchscreen", "${VIRTUAL-RUNTIME_touchscreen}", "",d)} \
+    ${@bb.utils.contains('DISTRO_FEATURES', 'rt', 'hwlatdetect', '',d)} \
     init-ifupdown \
     libdigiapix \
     libgpiod \
@@ -54,6 +55,7 @@ RDEPENDS:${PN} = "\
     os-release \
     ${@bb.utils.contains('MACHINE_FEATURES', 'pci', 'pciutils', '',d)} \
     recovery-utils \
+    ${@bb.utils.contains('DISTRO_FEATURES', 'rt', 'rt-tests', '',d)} \
     sysinfo \
     ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', 'system-monitor', '',d)} \
     usbutils \