style(msm8916): use size macros

Use the pre-defined size macros (SZ_*) for more clarity and to avoid
having to add comments to each size represented by hexadecimal numbers.

Change-Id: I6aebe2caf1365279670955b9b507dec7d7b04457
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
diff --git a/plat/qti/msm8916/include/platform_def.h b/plat/qti/msm8916/include/platform_def.h
index bfade70..6d5ff2b 100644
--- a/plat/qti/msm8916/include/platform_def.h
+++ b/plat/qti/msm8916/include/platform_def.h
@@ -16,11 +16,11 @@
  * the overall limit to 128 KiB. This could be increased if needed by placing
  * the "msm8916_entry_point" variable explicitly in the first 64 KiB of BL31.
  */
-#define BL31_LIMIT			(BL31_BASE + 0x20000)	/* 128 KiB */
-#define BL31_PROGBITS_LIMIT		(BL31_BASE + 0x10000)	/* 64 KiB */
+#define BL31_LIMIT			(BL31_BASE + SZ_128K)
+#define BL31_PROGBITS_LIMIT		(BL31_BASE + SZ_64K)
 
 #define CACHE_WRITEBACK_GRANULE		U(64)
-#define PLATFORM_STACK_SIZE		U(0x1000)
+#define PLATFORM_STACK_SIZE		SZ_4K
 
 /* CPU topology: single cluster with 4 cores */
 #define PLATFORM_CLUSTER_COUNT		U(1)