arch/arm/src/armv6-m/CMakeLists.txt: fix undefined reference to `up_show_cpuinfo'#16227

xiaoxiang781216 merged 1 commit intoapache:masterapache/nuttx:masterfrom

simbit18:simbit18-arm_cpuinfo.csimbit18/nuttx:simbit18-arm_cpuinfo.cCopy head branch name to clipboard