prereq-build: replace the openssl command check with a check for headers

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42995 3c298f89-4303-0410-b956-a3cf2f4a3e73
tools: revert faulty dependency on package stuff

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42996 3c298f89-4303-0410-b956-a3cf2f4a3e73
Revert "openssl: add host build."

This reverts commit r42988

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42997 3c298f89-4303-0410-b956-a3cf2f4a3e73
firmware-utils: rename encrypt()/decrypt() in mkhilinkfw to avoid collisions

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42998 3c298f89-4303-0410-b956-a3cf2f4a3e73
prereq-build: rename the openssl check to libssl, add back the old check - it is required after all

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42999 3c298f89-4303-0410-b956-a3cf2f4a3e73