feat(drtm): add Event Log driver support for DRTM

Added Event Log driver support for DRTM. This driver
is responsible for the doing the hash measurement of
various DRTM components as per [1], and putting these
measurements in the Event Log buffer.

[1]: https://developer.arm.com/documentation/den0113/a, section 3.16

Change-Id: I9892c313cf6640b82e261738116fe00f7975ee12
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
diff --git a/services/std_svc/drtm/drtm_main.h b/services/std_svc/drtm/drtm_main.h
index 59e5608..cccc14f 100644
--- a/services/std_svc/drtm/drtm_main.h
+++ b/services/std_svc/drtm/drtm_main.h
@@ -31,6 +31,10 @@
 #define DRTM_PAGE_SIZE		(4 * (1 << 10))
 #define DRTM_PAGE_SIZE_STR	"4-KiB"
 
+#define DL_ARGS_GET_PCR_SCHEMA(a)	(((a)->features >> 1) & 0x3U)
+#define DL_ARGS_GET_DLME_ENTRY_POINT(a)	\
+		(((a)->dlme_paddr + (a)->dlme_img_off + (a)->dlme_img_ep_off))
+
 enum drtm_retc {
 	SUCCESS = SMC_OK,
 	NOT_SUPPORTED = SMC_UNK,