device-sony-leo: install lk2nd package (MR 4077)

This enables us to easily flash lk2nd with pmbootstrap during
installation.

[ci:skip-build]: already built successfully in CI

device/testing/device-sony-leo/APKBUILD

@@ -3,12 +3,13 @@
 pkgname=device-sony-leo
 pkgdesc="Sony Xperia Z3"
 pkgver=0.3
-pkgrel=0
+pkgrel=1
 url="https://postmarketos.org"
 license="MIT"
 arch="armv7"
 options="!check !archcheck"
 depends="
+	lk2nd-msm8974
 	mkbootimg
 	msm-fb-refresher
 	postmarketos-base