New gp-peak device (Geeksphone Peak)

Hello,

The Geeksphone Peak is one of the very first Firefox OS phones. Now that Firefox OS is discontinued, it is not really useful anymore so postmarketOS is a great oppotunity to use it again.

This is my first port so I'm learning as I go. It currently boots and SSH over USB works but the screen stays black. (weston fails with this error: Failed to open frame buffer device ‘/dev/fb0’: Permission denied)

aports/device/device-gp-peak/APKBUILD

+# Reference: <https://postmarketos.org/devicepkg>
+pkgname="device-gp-peak"
+pkgdesc="Geeksphone Peak"
+pkgver=0.1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="noarch"
+options="!check"
+depends="linux-gp-peak mkbootimg mesa-dri-swrast"
+makedepends="devicepkg-dev"
+source="deviceinfo"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+sha512sums="9647e9da6be3e2097cfa3872dcd5cb23ba0f62b7f028336d9d3c78ad623619566cd49444593de1e3b747a0bb7f8e9f116e53da7ecbe15e67f28222a82af9a4a5  deviceinfo"