tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts

tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts

BugLink: https://bugs.launchpad.net/bugs/1848046
commit 1ea32c83c699df32689d329b2415796b7bfc2f6e upstream.

The tpm_tis_core has to set the TPM_CHIP_FLAG_IRQ before probing for
interrupts since there is no other place in the code that would set
it.

Cc: linux-stable@vger.kernel.org
Fixes: 570a36097f30 ("tpm: drop 'irq' from struct tpm_vendor_specific")
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>