ARM: dts: msm: update attributes for dfps memory for msm8996

Remove the no-map and shared-dma-pool properties for dynamic fps
memory node. The DSI PLL driver allocates virtual memory space to
ioremap the reserved memory pages to it. The DSI PLL codes are
then copied from this virtual memory.

Change-Id: If65b653137b5c0f69fb66d77389bd71e6c3a0259
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>