community/gqrx: enable on more archies

Enable on armhf, riscv64, s390x, and x86

community/gqrx/APKBUILD

@@ -5,7 +5,7 @@ pkgver=2.17.6
 pkgrel=0
 pkgdesc="Interactive SDR receiver waterfall for many devices"
 url="https://gqrx.dk/"
-arch="aarch64 armv7 x86_64" # limited by availability of gr-osmosdr
+arch="all !loongarch64 !ppc64le" # limited by availability of gr-osmosdr
 license="GPL-3.0-or-later"
 options="!check" # No test suite from upstream
 makedepends="