fix(Makefile): fix menuconfig compile error due to CC and LIBS variable error#931

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Frankslu wants to merge 2 commits intoOpenXiangShan:masterfrom

Frankslu:menuconfig-bugfix

Commits on Oct 15, 2025

fix(menuconfig): fix variable CC, CONFIG_CC, LIBS and LDFLAGS to
Frankslu
committed
fix(Makefile): check CONFIG_CC berfore assign it to CC in Makefile
Frankslu
committed