openssl: fold result of sed invocation into environment file

openssl: fold result of sed invocation into environment file

A long time ago, the environment.d-openssl.sh file was shared between
openssl 1.0 and openssl 1.1 recipes, and sed was used to make the path
right for the 1.1 version. Nowadays, with only a single recipe, this
is a bit roundabout, so just use the proper path in the file directly.

Signed-off-by: Rasmus Villemoes <ravi@prevas.dk>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>