system/cpuload: Fix application's Make.defs location

[tmedicci]

Summary

• system/cpuload: Fix application's Make.defs location

The PR #2974 first moved it to testing/sched/cpuload and the Make.defs was adjusted accordingly. However, during the review process, it was moved to system/cpuload folder, but its Make.defs wasn't updated. This PR fixes it.

Impact

Impact on user: YES. It enables users to build cpuload app.

Impact on build: YES. Now we can build it.

Impact on hardware: NO.

Impact on documentation: NO.

Impact on security: NO.

Impact on compatibility: NO.

Testing

Test it for ESP32-S3's nsh defconfig, for instance:

Building

make -j distclean && ./tools/configure.sh esp32s3-devkit:nsh && kconfig-tweak -e SCHED_CPULOAD_SYSCLK && kconfig-tweak -e CONFIG_SYSTEM_CPULOAD && make olddefconfig && make flash ESPTOOL_BINDIR=./ ESPTOOL_PORT=/dev/ttyUSB0 -s -j$(nproc) && minicom -D /dev/ttyUSB0

Running

Run cpuload on NSH:

nsh> cpuload &
cpuload [2:253]
nsh> ps
  PID GROUP PRI POLICY   TYPE    NPX STATE    EVENT     SIGMASK            STACK    CPU COMMAND
    0     0   0 FIFO     Kthread   - Ready              0000000000000000 0003056 88.0% Idle_Task
    1     1 100 RR       Task      - Running            0000000000000000 0003024  0.0% nsh_main
    2     2 253 RR       Task      - Waiting  Signal    0000000000000000 0002016 11.9% cpuload
nsh> ps
  PID GROUP PRI POLICY   TYPE    NPX STATE    EVENT     SIGMASK            STACK    CPU COMMAND
    0     0   0 FIFO     Kthread   - Ready              0000000000000000 0003056 57.4% Idle_Task
    1     1 100 RR       Task      - Running            0000000000000000 0003024  0.0% nsh_main
    2     2 253 RR       Task      - Waiting  Signal    0000000000000000 0002016 42.5% cpuload

Results

Before applying this patch, it fails to build with:

make[3]: *** /home/tiago/Documents/work/espressif/projects/nuttx/nuttxspace_alfa/apps/testing/sched/cpuload: No such file or directory.  Stop.

Now, it's been fixed ;)

[cederom]

Thank you @tmedicci good catch! :-)