ARM: zynq: Do not report NOR flash detection failure

With multi defconfig targeting several board configurations bug report like
below is so verbose.
Flash: ## Unknown flash on Bank 1 - Size = 0x00000000 = 0 MB
0 Bytes

Do not report that message and simply say "Flash: 0 Bytes" because most of
Zynq boards are using different type of flashes than NOR.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
1 file changed