feat(intel): provide atf build version via smc call

This patch provides ATF build version via SMC call
on Agilex7, Agilex5, Stratix10 and N5X platforms.

Change-Id: I61af83433fe61f85987f38ffc86380a41cdb5289
Signed-off-by: Girisha Dengi <girisha.dengi@intel.com>
Signed-off-by: Jit Loon Lim <jit.loon.lim@altera.com>
diff --git a/plat/intel/soc/common/socfpga_sip_svc.c b/plat/intel/soc/common/socfpga_sip_svc.c
index d64ead7..f7b41fa 100644
--- a/plat/intel/soc/common/socfpga_sip_svc.c
+++ b/plat/intel/soc/common/socfpga_sip_svc.c
@@ -1354,6 +1354,10 @@
 		status = intel_sdm_safe_inject_seu_err((uint32_t *)&x1, (uint32_t)x2);
 		SMC_RET1(handle, status);
 
+	case INTEL_SIP_SMC_ATF_BUILD_VER:
+		SMC_RET4(handle, INTEL_SIP_SMC_STATUS_OK, VERSION_MAJOR,
+			 VERSION_MINOR, VERSION_PATCH);
+
 	default:
 		return socfpga_sip_handler(smc_fid, x1, x2, x3, x4,
 			cookie, handle, flags);