ARM64: dts: ccimx8mm: expand CMA table for 4GB variants

Increase the size of the CMA region for ccimx8mm variants with
4 GiB of RAM. Since the properties only allow 32-bit values and
the logic doesn't require these values to be exact, use
0xFFFFFFFF instead of 0x100000000 to represent 4 GiB values.

https://onedigi.atlassian.net/browse/DEL-9494

Signed-off-by: Gonzalo Ruiz <Gonzalo.Ruiz@digi.com>
(cherry picked from commit 590c81a)

Author: gruizdigi

arch/arm64/boot/dts/digi/ccimx8mm.dtsi

@@ -118,6 +118,7 @@
 				0 0x20000000 0 0x6000000	/* 512 MB variants -> 96 MB of CMA */
 				0 0x40000000 0 0x14000000	/* 1 GB variants   -> 320 MB of CMA */
 				0 0x80000000 0 0x28000000	/* 2 GB variants   -> 640 MB of CMA */
+				0 0xFFFFFFFF 0 0x50000000	/* 4 GB variants   -> 1280 MB of CMA */
 			>;
 			/delete-property/ alloc-ranges;
 		};