MAINTAINERS: add Jarkko as maintainer for trusted keys

Trusted keys are variable length random numbers generated by the TPM,
which are used as symmetric keys.  The trusted key is never exported
to userspace in the clear.

Adding Jarrko, the TPM maintainer.
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>

MAINTAINERS

@@ -8089,6 +8089,7 @@ F:	security/keys/encrypted-keys/
 
 KEYS-TRUSTED
 M:	James Bottomley <jejb@linux.vnet.ibm.com>
+M:      Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
 M:	Mimi Zohar <zohar@linux.vnet.ibm.com>
 L:	linux-integrity@vger.kernel.org
 L:	keyrings@vger.kernel.org