verdin-imx8mm: verdin-imx8mp: update env memory layout (again)

Update the distro config env memory layout for the Verdin iMX8M Mini and
Verdin iMX8M Plus again:

- loadaddr=0x48200000 allows for 128MB area for uncompressing (ie FIT
  images, kernel_comp_addr_r, kernel_comp_size)
- fdt_addr_r = loadaddr + 128MB - allows for 128MB kernel
- scriptaddr = fdt_addr_r + 512KB - allows for 512KB fdt
- ramdisk_addr_r = scriptaddr + 512KB - allows for 512KB script

Memory layout taken from commit fd5c7173ade4
("imx8m{m,n}_venice: update env memory layout").

Note that for our regular BSP Layers and Reference Images for Yocto
Project an updated distro boot script is required (see
meta-toradex-bsp-common/recipes-bsp/u-boot/u-boot-distro-boot).

Note that this corrects a pre-maturely applied version 2 of the same
patch set.

Fixes: bbe0089d29e ("verdin-imx8mm: verdin-imx8mp: update env memory layout")
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
diff --git a/include/configs/verdin-imx8mp.h b/include/configs/verdin-imx8mp.h
index 69235cb..ce72798 100644
--- a/include/configs/verdin-imx8mp.h
+++ b/include/configs/verdin-imx8mp.h
@@ -29,7 +29,7 @@
 	"fdt_addr_r=0x50200000\0" \
 	"kernel_addr_r=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \
 	"kernel_comp_addr_r=0x40200000\0" \
-	"kernel_comp_size=0x08080000\0" \
+	"kernel_comp_size=0x08000000\0" \
 	"ramdisk_addr_r=0x50300000\0" \
 	"scriptaddr=0x50280000\0"