arm/dt: msm: apq8074: Update device tree with memory savings information

With modem lite the memory map for apq8074 has been updated. The
memory hole and TZ image address is modified to reflect the same.

Change-Id: I683b51c58a6d0c6072b9ef47f9bc0616ab08c4d3
Signed-off-by: Neeti Desai <neetid@codeaurora.org>