feat(tc): make SPE feature asymmetric

Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: Ibf0fecb2a97cb0f3508e01e0907e61e3c437ac00
diff --git a/plat/arm/board/tc/platform.mk b/plat/arm/board/tc/platform.mk
index fb70500..f3c3b4c 100644
--- a/plat/arm/board/tc/platform.mk
+++ b/plat/arm/board/tc/platform.mk
@@ -34,6 +34,7 @@
 ENABLE_MPMM			:=	1
 ENABLE_MPMM_FCONF		:=	1
 ENABLE_FEAT_MTE2	        :=	2
+ENABLE_SPE_FOR_NS		:=	3
 
 CTX_INCLUDE_AARCH32_REGS	:=	0