openssl: don't disable the AFALG engine based on host kernel

Whether the AFALG engine (use of hardware crypto via AF_ALG) is enable or
disable depends on whether the host kernel is 4.1 or above, which has no bearing
on whether the target system supports it.

Remove the complicated logic and simply enable/disable as requested.

(From OE-Core rev: 6998a3d7d0ecd27014053fe40c9fb4e0ec970880)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-connectivity/openssl/openssl/afalg.patch

@@ -0,0 +1,31 @@
+Don't refuse to build afalgeng if cross-compiling or the host kernel is too old.
+
+Upstream-Status: Submitted [hhttps://github.com/openssl/openssl/pull/7688]
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+diff --git a/Configure b/Configure
+index 3baa8ce..9ef52ed 100755
+--- a/Configure
++++ b/Configure
+@@ -1550,20 +1550,7 @@ unless ($disabled{"crypto-mdebug-backtrace"})
+ unless ($disabled{afalgeng}) {
+     $config{afalgeng}="";
+     if (grep { $_ eq 'afalgeng' } @{$target{enable}}) {
+-        my $minver = 4*10000 + 1*100 + 0;
+-        if ($config{CROSS_COMPILE} eq "") {
+-            my $verstr = `uname -r`;
+-            my ($ma, $mi1, $mi2) = split("\\.", $verstr);
+-            ($mi2) = $mi2 =~ /(\d+)/;
+-            my $ver = $ma*10000 + $mi1*100 + $mi2;
+-            if ($ver < $minver) {
+-                $disabled{afalgeng} = "too-old-kernel";
+-            } else {
+-                push @{$config{engdirs}}, "afalg";
+-            }
+-        } else {
+-            $disabled{afalgeng} = "cross-compiling";
+-        }
++        push @{$config{engdirs}}, "afalg";
+     } else {
+         $disabled{afalgeng}  = "not-linux";
+     }

meta/recipes-connectivity/openssl/openssl_1.1.1a.bb

@@ -16,6 +16,7 @@ SRC_URI = "http://www.openssl.org/source/openssl-${PV}.tar.gz \
            file://openssl-c_rehash.sh \
            file://0001-skip-test_symbol_presence.patch \
            file://0001-buildinfo-strip-sysroot-and-debug-prefix-map-from-co.patch \
+           file://afalg.patch \
            "
 
 SRC_URI_append_class-nativesdk = " \