dev-libs/opensc: Add elibtoolize to fix cross compiling for arm/arm64

opensc fails to cross compile for arm/arm64 target because libtool
adds host /usr/lib64 to -L during make install when the libraries are
relinked.

Adding elibtoolize in src_prepare() applies the "cross" patch that
fixes this.

Closes: https://bugs.gentoo.org/718790
Signed-off-by: John L Chen <zuan@chromium.org>
Closes: https://github.com/gentoo/gentoo/pull/15460
Signed-off-by: Mikle Kolyada <zlogene@gentoo.org>

dev-libs/opensc/opensc-0.20.0.ebuild

@@ -3,7 +3,7 @@
 
 EAPI=7
 
-inherit bash-completion-r1
+inherit bash-completion-r1 libtool
 
 DESCRIPTION="Libraries and applications to access smartcards"
 HOMEPAGE="https://github.com/OpenSC/OpenSC/wiki"
@@ -36,6 +36,11 @@ REQUIRED_USE="
 	ctapi? ( !pcsc-lite !openct )
 	|| ( pcsc-lite openct ctapi )"
 
+src_prepare() {
+	default
+	elibtoolize
+}
+
 src_configure() {
 	econf \
 		--with-completiondir="$(get_bashcompdir)" \