crypto/internal/fips/aes/gcm: skip TestAllocations on PPC64

TestAllocations is failing on PPC64 causing all PPC64 CI to fail.

Skip the test until it can be debugged.

For #70448

Change-Id: Ic18e402f4af5939a90eba2e1f2b182699013ed55
Reviewed-on: https://go-review.googlesource.com/c/go/+/629697
Reviewed-by: Filippo Valsorda <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Cherry Mui <[email protected]>

Author: pmur

src/crypto/internal/fips/aes/gcm/ctrkdf_test.go

@@ -12,10 +12,14 @@ import (
 	"crypto/internal/fips/drbg"
 	"crypto/internal/fips/sha3"
 	"encoding/hex"
+	"runtime"
 	"testing"
 )
 
 func TestAllocations(t *testing.T) {
+	if runtime.GOARCH == "ppc64" || runtime.GOARCH == "ppc64le" {
+		t.Skip("Test reports non-zero allocation count. See issue #70448")
+	}
 	cryptotest.SkipTestAllocations(t)
 	if allocs := testing.AllocsPerRun(10, func() {
 		key := make([]byte, 32)