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/msm8916_mmap.h b/plat/qti/msm8916/include/msm8916_mmap.h
index 406ae6b..d201536 100644
--- a/plat/qti/msm8916/include/msm8916_mmap.h
+++ b/plat/qti/msm8916/include/msm8916_mmap.h
@@ -8,9 +8,9 @@
 #define MSM8916_MMAP_H
 
 #define PCNOC_BASE		0x00000000
-#define PCNOC_SIZE		0x8000000	/* 128 MiB */
+#define PCNOC_SIZE		SZ_128M
 #define APCS_BASE		0x0b000000
-#define APCS_SIZE		0x800000	/* 8 MiB */
+#define APCS_SIZE		SZ_8M
 
 #define MPM_BASE		(PCNOC_BASE + 0x04a0000)
 #define MPM_PS_HOLD		(MPM_BASE + 0xb000)