samsung-degaswifi: new device

Added samsung degaswifi, added mkbootim-pxa (tool for creating pxa1088 boot.img)

device/device-samsung-degaswifi/APKBUILD

+# Reference: <https://postmarketos.org/devicepkg>
+pkgname="device-samsung-degaswifi"
+pkgdesc="Samsung Galaxy Tab 4 7.0"
+pkgver=0.1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="armv7"
+options="!check !archcheck"
+depends="postmarketos-base linux-samsung-degaswifi mkbootimgpxa-osm0sis mkbootimg mesa-dri-swrast"
+makedepends="devicepkg-dev"
+source="deviceinfo"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+
+sha512sums="0bc6309cafebd30de6799498d1aeeedc8a94a67322c23703540531571f8873f3270c7766b859aa661cb00a3b53ffe9f16c7b4d8f8d2fac5cc2673d134832a0e1  deviceinfo"