device-pine64-pinephonepro: add gschema override for keyboard symbols (MR 3310)

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

device/community/device-pine64-pinephonepro/51_keyboard.gschema.override

+[org.gnome.desktop.input-sources]
+xkb-options=["lv3:ralt_switch"]

device/community/device-pine64-pinephonepro/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer: Martijn Braam <martijn@brixit.nl>
 pkgname=device-pine64-pinephonepro
 pkgdesc="PINE64 PinePhone Pro"
-pkgver=3.2
+pkgver=3.3
 pkgrel=0
 url="https://postmarketos.org"
 license="MIT"
@@ -24,12 +24,16 @@ makedepends="
 	grub
 	grub-efi
 	"
-subpackages="$pkgname-nonfree-firmware:nonfree_firmware"
+subpackages="
+	$pkgname-nonfree-firmware:nonfree_firmware
+	$pkgname-gnome
+	"
 install="
 	$pkgname.post-install
 	$pkgname.post-upgrade
 	"
 source="
+	51_keyboard.gschema.override
 	90-modem-eg25.rules
 	deviceinfo
 	grub.cfg
@@ -110,7 +114,14 @@ nonfree_firmware() {
 	mkdir "$subpkgdir"
 }
 
+gnome() {
+	install_if="$pkgname=$pkgver-r$pkgrel postmarketos-base-ui-gnome"
+	install -Dm644 "$srcdir"/51_keyboard.gschema.override -t \
+		"$subpkgdir"/usr/share/glib-2.0/schemas
+}
+
 sha512sums="
+2d68ffe143f633a86670f30e45dbad1cc313f219f22b7cd3319ab44bb7209c20cb29f2ff2c60c92390154af9c9a6815c4186be555364cf31552005eba024c0e7  51_keyboard.gschema.override
 fdfa807c0de33aee3deb09ee25c37a58fa970ce71483e52f21793717cb89adeb74f251ff1a2c2086361e3e58877f8b2e5643f24186b1a537acf9c16e3419313c  90-modem-eg25.rules
 e591572d0bfc4d7d990fcc15bc82e78e60404becf62a38283b4ceee6f49a812b63eebbc5c304907330e33dce5f023edba26c9b86f1375affa3cf6b49fbd06539  deviceinfo
 eeddbd3712c7385ef8daea252d71f9f91f8be03be43dea4ce036ae7d7b8a38d199a709ae87b9aa8fe8a63f0201224dbda704fd4b95c8c7d3b4f9852ae4e95c11  grub.cfg