package/gnutls: disable tpm2-tss

Disable tpm2-tss to avoid the following circular dependency if
BR2_PACKAGE_TPM2_TSS_FAPI is selected:
tpm2-tss -> libcurl -> gnutls -> tmp2-tss
resulting in the following build failure of libcurl or rtmpdump since
commit caff4179a4:

configure: error: TLS not detected, you will not be able to use HTTPS, FTPS, NTLM and more.
Use --with-openssl, --with-gnutls, --with-wolfssl, --with-mbedtls, --with-schannel, --with-secure-transport, --with-amissl, --with-bearssl or --with-rustls to address this.

[...]

In file included from rtmp.c:32:
rtmp_sys.h:110:10: fatal error: gnutls/gnutls.h: No such file or directory
  110 | #include <gnutls/gnutls.h>
      |          ^~~~~~~~~~~~~~~~~

Fixes: caff4179a4
 - http://autobuild.buildroot.org/results/72e1843de650c9ed4795f1141e9fd485b71a14c3
 - http://autobuild.buildroot.org/results/918f0f7efa810b17f6d2266a890bf0150cbed146

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/gnutls/gnutls.mk

@@ -30,6 +30,7 @@ GNUTLS_CONF_OPTS = \
 	--without-librt-prefix \
 	--without-libz-prefix \
 	--without-tpm \
+	--without-tpm2 \
 	$(if $(BR2_PACKAGE_GNUTLS_TOOLS),--enable-tools,--disable-tools) \
 	$(if $(BR2_PACKAGE_GNUTLS_ENABLE_SSL2),--enable,--disable)-ssl2-support \
 	$(if $(BR2_PACKAGE_GNUTLS_ENABLE_GOST),--enable,--disable)-gost
@@ -99,13 +100,6 @@ else
 GNUTLS_CONF_OPTS += --without-p11-kit
 endif
 
-ifeq ($(BR2_PACKAGE_TPM2_TSS),y)
-GNUTLS_CONF_OPTS += --with-tpm2
-GNUTLS_DEPENDENCIES += tpm2-tss
-else
-GNUTLS_CONF_OPTS += --without-tpm2
-endif
-
 ifeq ($(BR2_PACKAGE_ZLIB),y)
 GNUTLS_CONF_OPTS += --with-zlib
 GNUTLS_DEPENDENCIES += zlib