lenovo-lxf-p5100: new device

a working downsteam port

device/testing/device-lenovo-lxf-p5100/APKBUILD

+# Reference: <https://postmarketos.org/devicepkg>
+pkgname=device-lenovo-lxf-p5100
+pkgdesc="Lenovo Yoga Tab 3 10 LTE"
+pkgver=1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="armv7"
+options="!check !archcheck"
+depends="postmarketos-base linux-lenovo-lxf-p5100 mkbootimg xz mdss-fb-init-hack msm-fb-refresher"
+makedepends="devicepkg-dev"
+source="deviceinfo"
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+sha512sums="
+c9eb05f19bcd9455c6824bc817f77fe7f649398a0036bfe765a64e16dce0cfad645a12b470b5e2ba46bf489aeff4d479119629bc167a73bf841ea48195335cff  deviceinfo
+"