ARC: haps: bump memory to 1 GB

Signed-off-by: NVineet Gupta <vgupta@synopsys.com>

arch/arc/boot/dts/haps_hs.dts

@@ -16,7 +16,7 @@
 	memory {
 		device_type = "memory";
 		/* CONFIG_LINUX_RAM_BASE needs to match low mem start */
-		reg = <0x0 0x80000000 0x0 0x20000000	/* 512 MB low mem */
+		reg = <0x0 0x80000000 0x0 0x40000000	/* 1 GB low mem */
 		       0x1 0x00000000 0x0 0x40000000>;	/* 1 GB highmem */
 	};