product/tc0: Enable Theodul DSU in TC platform

Increase the core count and add respective entries in DTS.
Add Klein assembly file to cpu sources for core initialization.
Add SCMI entries for cores.

Signed-off-by: Avinash Mehta <avinash.mehta@arm.com>
Change-Id: I14dc1d87df6dcc8d560ade833ce1f92507054747
diff --git a/plat/arm/board/tc0/platform.mk b/plat/arm/board/tc0/platform.mk
index 6cc5f46..393d09c 100644
--- a/plat/arm/board/tc0/platform.mk
+++ b/plat/arm/board/tc0/platform.mk
@@ -43,7 +43,8 @@
 
 PLAT_INCLUDES		+=	-I${TC0_BASE}/include/
 
-TC0_CPU_SOURCES	:=	lib/cpus/aarch64/cortex_matterhorn.S
+TC0_CPU_SOURCES	:=	lib/cpus/aarch64/cortex_klein.S         \
+			lib/cpus/aarch64/cortex_matterhorn.S
 
 INTERCONNECT_SOURCES	:=	${TC0_BASE}/tc0_interconnect.c