RISC-V: skip cpu-map when parsing elf_hwcap

[mhorne]

Summary

The fill_elf_hwcap() function expects to find only cpu nodes under the
/cpus entry of the device tree. Newer versions of QEMU insert a cpu-map
node which describes the CPU topology, breaking this function. To fix
this, simply skip any non-cpu entries.

[markj]

sys/riscv/riscv/identcpu.c

145 ↗

(On Diff #63663)

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