plat/arm/sgi: override weak implementation of plat_arm_get_cpu_pe_count

To support platforms which are based on multi-threaded CPUs, override
the weak implementation of plat_arm_get_cpu_pe_count function to return
the number of threads supported by the CPU used in the platform.

Change-Id: Ia680773f1277b17e2d3d2414d87943dcece33e89
Signed-off-by: Chandni Cherukuri <chandni.cherukuri@arm.com>

plat/arm/css/sgi/sgi_topology.c

@@ -44,3 +44,11 @@ const uint32_t plat_css_core_pos_to_scmi_dmn_id_map[32] = {
 	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,		\
 	16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
 };
+
+/******************************************************************************
+ * Return the number of PE's supported by the CPU.
+ *****************************************************************************/
+unsigned int plat_arm_get_cpu_pe_count(u_register_t mpidr)
+{
+	return CSS_SGI_MAX_PE_PER_CPU;
+}