test(rmm): add testcase for multiple rec on multiple cpu

Test creates and enter 8 recs on different CPUs.
Exercises CPU_ON, CPU_OFF and PSCI_AFFINITY_INFO
from realm.

Signed-off-by: Shruti Gupta <shruti.gupta@arm.com>
Change-Id: Iecc58ea79bfde28f307d1df99680d707e57a1d80
diff --git a/realm/include/realm_tests.h b/realm/include/realm_tests.h
index 5caea8c..3016a4d 100644
--- a/realm/include/realm_tests.h
+++ b/realm/include/realm_tests.h
@@ -23,6 +23,7 @@
 bool test_realm_sve_cmp_regs(void);
 bool test_realm_sve_undef_abort(void);
 bool test_realm_multiple_rec_psci_denied_cmd(void);
+bool test_realm_multiple_rec_multiple_cpu_cmd(void);
 bool test_realm_sme_read_id_registers(void);
 bool test_realm_sme_undef_abort(void);