wexler-qc750: fix device startup

After almost 3 years, I got my device not starting any UI, even console. Figured out that framebuffer console activation fixed it.

Also enabled external storage, so i can install pmOS on sdcard, without fastboot 800 MB restrictions. Nice.

device/testing/device-wexler-qc750/APKBUILD

 # Reference: <https://postmarketos.org/devicepkg>
 pkgname=device-wexler-qc750
 pkgdesc="WEXLER Tab 7t"
-pkgver=0.1
-pkgrel=3
+pkgver=0.2
+pkgrel=0
 url="https://postmarketos.org"
 license="MIT"
 arch="armv7"
@@ -20,5 +20,5 @@ package() {
 }
 
 sha512sums="
-f14bbea5eb5b011a841b4d07e673bf2c50226535063751d31c14aa2e5a7109a6afe2b5162298f1c2c9f412de141a4e2ef142421d4f6bfdce321838d94279024b  deviceinfo
+073a7495bd094d5735cb8b297d172be73255a5829102999c5f62abf3dc5d650f75f11a89bef4415b6ea9bdb9fda569282dd394f5e7ba0c2370a2eab905d188ef  deviceinfo
 "