In most cases it does not matter. Uboot only runs for a short time, it's job is to load the linux kernel (and devicetree, and perhaps a ramdisk) into RAM. For this operation, the exact model of flash is not significant: it is just performing an "array read" operation. If you are trying to optimize the boot time, or if you are erasing/writing the flash from uboot, then perhaps the type of flash is more important. But this is fairly uncommon.
Much more important is how Linux kernel sees your flash chip. The description that uboot prints is completely unrelated to what Linux sees: it has its own drivers, and its own devicetree. These are the ones that matter once you have booted up fully. Check the kernel messages (or "dmesg" command).
