Rollup merge of #39601 - dumbbell:update-liblibc-to-include-aarch64-unknown-freebsd, r=alexcrichton
Rollup merge of #39601 - dumbbell:update-liblibc-to-include-aarch64-unknown-freebsd, r=alexcrichton

liblibc: Update to include `aarch64-unknown-freebsd` support

aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,GBGamer/rust,GBGamer/rust,aidancully/rust,graydon/rust,GBGamer/rust,GBGamer/rust,graydon/rust,aidancully/rust,graydon/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,aidancully/rust,aidancully/rust,GBGamer/rust