ipq40xx: dts: disable qpic_bam for EMMC and SPI Flash devices
The qpic DMA controller is used by the parallel NAND Flash
interface. We don't need to enable it when nand-controller node
is marked as disabled.
Signed-off-by: Shiji Yang <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/16654
Signed-off-by: Hauke Mehrtens <[email protected]>