ARM: dts: ipq4019: Add a few peripheral nodes

Now with the driver updates for some peripherals being there,
add i2c, spi, pcie, bam, qpic-nand, scm nodes to enhance the available
peripheral support.

Reviewed-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>