SUNRPC: Advertise support for RFC 8009 encryption types

Add the RFC 8009 encryption types to the string of integers that is
reported to gssd during upcalls. This enables gssd to utilize keys
with these encryption types when support for them is built into the
kernel.

Link: https://bugzilla.linux-nfs.org/show_bug.cgi?id=400Tested-by: Scott Mayhew <smayhew@redhat.com>
Reviewed-by: Simo Sorce <simo@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

net/sunrpc/auth_gss/gss_krb5_mech.c

@@ -214,6 +214,10 @@ static char gss_krb5_enctype_priority_list[64];
 static void gss_krb5_prepare_enctype_priority_list(void)
 {
 	static const u32 gss_krb5_enctypes[] = {
+#if defined(CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA2)
+		ENCTYPE_AES256_CTS_HMAC_SHA384_192,
+		ENCTYPE_AES128_CTS_HMAC_SHA256_128,
+#endif
 #if defined(CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA1)
 		ENCTYPE_AES256_CTS_HMAC_SHA1_96,
 		ENCTYPE_AES128_CTS_HMAC_SHA1_96,