htc-flounder: update to mainline kernel

This is a relatively basic port, however it's mostly more functional than the one it replaces and uses a mainline kernel so I figured now would be a good time to get it included in pmOS. The port is made completely from scratch, hence the odd tweaks like changing package licenses.

The device boots and has most of the SOC functional, a framebuffer display is working, USB networking is not functional (although USB OTG does work). Some other hardware such as WiFi and the touchscreen should also work.

One thing to note is that sometimes running a mainline kernel can cause the battery meter in Android to get stuck until the battery is physically disconnected and reconnected.

Fastboot flashing works, FDE is untested.

device/testing/device-htc-flounder/APKBUILD

-# Reference: <https://postmarketos.org/devicepkg>
+# Maintainer: Segfault <awarnecke002@hotmail.com>
 pkgname=device-htc-flounder
 pkgdesc="Google Nexus 9"
-pkgver=0.1
-pkgrel=13
+pkgver=0.2
+pkgrel=0
 url="https://postmarketos.org"
-license="gpl-v3"
+license="MIT"
 arch="aarch64"
 options="!check !archcheck"
-depends="postmarketos-base linux-htc-flounder mkbootimg"
+depends="
+	linux-htc-flounder
+	mkbootimg
+	postmarketos-base
+"
 makedepends="devicepkg-dev"
 subpackages="$pkgname-nonfree-firmware:nonfree_firmware"
 source="deviceinfo"
@@ -15,15 +19,17 @@ source="deviceinfo"
 build() {
 	devicepkg_build $startdir $pkgname
 }
+
 package() {
 	devicepkg_package $startdir $pkgname
-
 }
+
 nonfree_firmware() {
-	pkgdesc="Firmware"
-	depends="linux-firmware-brcm linux-firmware-cypress firmware-htc-flounder"
+	pkgdesc="Google Nexus 9 firmware"
+	depends="linux-firmware-brcm linux-firmware-nvidia firmware-htc-flounder"
 	mkdir "$subpkgdir"
 }
+
 sha512sums="
-42fd2afbd560cc23c0b065ff046b9accdb9efa141b2452239b52a767ee5fb3b4f032dff1c276f7630348db684c2b582dbd601614c470551372bba4b9929fa35a  deviceinfo
+91501e12adbb13d5f70a24abdd6eb51f4f671c22b6a25405af7032d2902226527e862736af18e95e278d46b6266ca58f130fb9fe0d8c553251b8e2e85345a7e4  deviceinfo
 "