testing/py3-tpm2-pytss: disable on loongarch64

https://build.alpinelinux.org/buildlogs/build-edge-loongarch64/testing/py3-tpm2-pytss/py3-tpm2-pytss-2.2.1-r0.log

cffi.CDefError: only supports one of the following syntax:
  #define TPM2_HR_PCR ...     (literally dot-dot-dot)
  #define TPM2_HR_PCR NUMBER  (with NUMBER an integer constant, decimal/hex/octal)
got:
  #define TPM2_HR_PCR ...<< TPM2_HR_SHIFT)

testing/py3-tpm2-pytss/APKBUILD

@@ -6,7 +6,9 @@ pkgver=2.2.1
 pkgrel=0
 pkgdesc="Python bindings for TSS"
 url="https://github.com/tpm2-software/tpm2-pytss"
-arch="all !armhf !armv7 !riscv64 !x86" # limited by failing check()
+# armhf, armv7, riscv64, x86: limited by failing check()
+# loongarch64: ftbfs, raises cffi.CDefError
+arch="all !armhf !armv7 !riscv64 !x86 !loongarch64"
 license="BSD-2-Clause"
 checkdepends="
 	py3-pytest-forked