[Ada] Combine system.ads files - arm and aarch64 linux

Systemitize Word_Size and Memory_Size declarations rather than hard code
with numerical values or OS specific Long_Integer size.

gcc/ada/

	* libgnat/system-linux-arm.ads (Memory_Size): Compute based on
	Word_Size.

diff --git a/gcc/ada/libgnat/system-linux-arm.ads b/gcc/ada/libgnat/system-linux-arm.ads
index 6f2cb247fec4b9484258d42fc7d22c61e297086b..996d40727fc1be0258d36923db8ff068b57b387d 100644 (file)
--- a/gcc/ada/libgnat/system-linux-arm.ads
+++ b/gcc/ada/libgnat/system-linux-arm.ads
@@ -70,7 +70,7 @@ package System is
 
    Storage_Unit : constant := 8;
    Word_Size    : constant := Standard'Word_Size;
-   Memory_Size  : constant := 2 ** Long_Integer'Size;
+   Memory_Size  : constant := 2 ** Word_Size;
 
    --  Address comparison