This patch moves mp service ppi document from icelake/MultiProcesorInit.md
to ppi/mp_service_ppi.c.
Change-Id: I1bbaeb2644f219b5a1fda0c7c4b594184d53958c
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31840
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
b0f4456aed