Auto merge of #33786 - birkenfeld:make-fix, r=jseyfried

Makefile.in: dont use unnecessary escapes in echo

I don't know if `echo` allows escapes without `-e` on other systems, but on a GNU userland this outputs literal `\n` on the terminal. In this case there's an easy way to write this without escapes anyway.

r? @GuillaumeGomez