fix(drtm): adjust Event Log size in DLME

Updated the code to ensure the Event Log in the DLME meets
the minimum size requirement of 64KB, as specified in the
specification.

Change-Id: If0b179a97c0dca489edc0047da401bbb4ce09f39
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 a7d053f..c105b56 100644
--- a/services/std_svc/drtm/drtm_main.h
+++ b/services/std_svc/drtm/drtm_main.h
@@ -37,6 +37,11 @@
 		(((a)->dlme_paddr + (a)->dlme_img_off + (a)->dlme_img_ep_off))
 
 /*
+ * Minimum size of Event Log in DLME data (64 KiB)
+ */
+#define ARM_DRTM_MIN_EVENT_LOG_SIZE	U(0x10000)
+
+/*
  * Range(Min/Max) of DRTM parameter structure versions supported
  */
 #define ARM_DRTM_PARAMS_MIN_VERSION	U(1)