addpatch: age-plugin-tpm

- patch [go-tpm-tools](https://github.com/google/go-tpm-tools) to support RISC V
- upstreamed: google/go-tpm-tools#407
- check will timeout on luxio, while centiskorch is ok

age-plugin-tpm/riscv64.patch

@@ -0,0 +1,15 @@
+--- PKGBUILD
++++ PKGBUILD
+@@ -12,6 +12,12 @@ makedepends=("go" "git" "swtpm")
+ source=("$pkgname-$pkgver.tar.gz::https://github.com/Foxboron/$pkgname/archive/v${pkgver}.tar.gz")
+ sha256sums=('cafbf5986d7ac3b5e314b0f5cafe7fe8424d3af8e9a18f19a71a490bed91be7a')
+
++prepare() {
++  cd "${pkgname}-${pkgver}"
++  echo -e '\nreplace github.com/google/go-tpm-tools => github.com/aimixsaka/go-tpm-tools riscv\n' >> go.mod
++  go mod tidy
++}
++
+ build(){
+     cd "${pkgname}-${pkgver}"
+     go build \