package/tpm2-tss: add upstream patch to drop hardcoded -lgcrypt from tss2-esys.pc

package/tpm2-tss: add upstream patch to drop hardcoded -lgcrypt from tss2-esys.pc

tss2-esys.pc contains a hardcoded -lgcrypt even though the openssl crypto
backend (as in Buildroot) may be used, leading to linker errors when using
esys.

Given that tpm2-tss doesn't allow static linking, there is no need to
explicitly list the crypto library dependency.

Cherry pick an upstream patch to fix this.  Notice that the upstream patch
also changes the default crypto backend to openssl.  As this isn't stricly
needed (we explicitly configure for openssl) and requires autoreconv, drop
the configure.ac hunk from the patch.

https://github.com/tpm2-software/tpm2-tss/pull/1173

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>