Auto merge of #1358 - pkubaj:patch-1, r=gnzlbg

Add powerpc64-unknown-freebsd target

Per rust-lang/stdarch#765 add powerpc64-unknown-freebsd to prevent further breakages.

Author: bors

ci/build.sh

@@ -170,6 +170,7 @@ done
 RUST_LINUX_NO_CORE_TARGETS="\
 aarch64-pc-windows-msvc \
 aarch64-unknown-cloudabi \
+aarch64-unknown-freebsd \
 aarch64-unknown-hermit \
 aarch64-unknown-netbsd \
 aarch64-unknown-openbsd \
@@ -189,6 +190,7 @@ mipsel-unknown-linux-uclibc \
 nvptx64-nvidia-cuda \
 powerpc-unknown-linux-gnuspe \
 powerpc-unknown-netbsd \
+powerpc64-unknown-freebsd \
 riscv32imac-unknown-none-elf \
 riscv32imc-unknown-none-elf \
 sparc64-unknown-netbsd \