8903416 Leave more space (4MB) for uboot before the first partition

Authored and Committed by pgreco a month ago
    Leave more space (4MB) for uboot before the first partition
    
    Uboot is getting bigger, and in some cases, it doesn't even fit in 1MB
    (like BeagleBoneBlack).
    Start the first partition at 4MB to leave more space.
    
        
file modified
+1 -1