soc/intel/{icl.tgl,jsl}: Remove SMRAM register programming

SA SMRAMC register PCI offset 0x88 is deprecated for ICL, JSL and TGL.
Removing the register programming for these platforms. The write to
this register does not take effect and remains configured to 0, even
when programmed.

Signed-off-by: Aamir Bohra <aamir.bohra@intel.com>
Change-Id: I3f581b90ea99012980f439a7914e8d901585b004
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44060
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

src/soc/intel/tigerlake/cpu.c

@@ -191,9 +191,6 @@ static void post_mp_init(void)
 	 * start flowing.
 	 */
 	global_smi_enable();
-
-	/* Lock down the SMRAM space. */
-	smm_lock();
 }
 
 static const struct mp_ops mp_ops = {