fix(morello): include errata workaround for 1868343

This patch includes the errata workaround for erratum
1868343 for the Morello platform.

Signed-off-by: Manoj Kumar <manoj.kumar3@arm.com>
Change-Id: Ifea8148e10946db2276560f90bf2f32bf12b9dcc
diff --git a/plat/arm/board/morello/platform.mk b/plat/arm/board/morello/platform.mk
index 26a1911..86047e3 100644
--- a/plat/arm/board/morello/platform.mk
+++ b/plat/arm/board/morello/platform.mk
@@ -83,6 +83,9 @@
 
 override ARM_PLAT_MT			:=	1
 
+# Errata workarounds:
+ERRATA_N1_1868343			:=	1
+
 # Select SCMI/SDS drivers instead of SCPI/BOM driver for communicating with the
 # SCP during power management operations and for SCP RAM Firmware transfer.
 CSS_USE_SCMI_SDS_DRIVER			:=	1