cpupower: split cpufreq-bench into cpupower-bench

The kernel's cpupower Makefile builds cpufreq-bench by default and
installs its cpufreq-bench_plot.sh helper, a bash script, into
${bindir}. That makes the whole cpupower package RDEPEND on bash,
which pulls bash into images that only want the cpupower tool, such
as busybox based initramfs images.

Move cpufreq-bench, its plot script and its configuration file to
cpupower-bench and carry the bash dependency there. Images that use
cpufreq-bench now need to install cpupower-bench, so switch the
benchmarks packagegroup to it.

AI-Generated: Uses Claude Code
Signed-off-by: Ricardo Salveti <ricardo.salveti@oss.qualcomm.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

meta-oe/recipes-core/packagegroups/packagegroup-meta-oe.bb

@@ -53,7 +53,7 @@ RDEPENDS:packagegroup-meta-oe = "\
 RDEPENDS:packagegroup-meta-oe-benchmarks = "\
     bonnie++ \
     coremark-pro \
-    cpupower \
+    cpupower-bench \
     dbench \
     dhrystone \
     fio \

meta-oe/recipes-kernel/cpupower/cpupower.bb

@@ -27,11 +27,12 @@ do_install() {
 }
 
 PACKAGE_ARCH = "${MACHINE_ARCH}"
-PACKAGES =+ "${PN}-systemd"
+PACKAGES =+ "${PN}-bench ${PN}-systemd"
 
+FILES:${PN}-bench = "${sbindir}/cpufreq-bench ${bindir}/cpufreq-bench_plot.sh ${sysconfdir}/cpufreq-bench.conf"
 FILES:${PN}-systemd = "${sysconfdir}/cpupower-service.conf ${systemd_system_unitdir}"
 
-RDEPENDS:${PN} = "bash"
+RDEPENDS:${PN}-bench = "bash"
 
 python do_package:prepend() {
     d.setVar('PKGV', d.getVar("KERNEL_VERSION").split("-")[0])