hwc: move fbzorder initialization code to hwc_fbupdate.cpp

move fbzorder initialization for external during display animation
from landscape to portrait from hwc.cpp to hwc_fbupdate.cpp.

Change-Id: I4dbac87fe56f8262356043865b61a982244cd72a
hwc: Configure framebuffer before other layers.

If framebuffer needs to be configured, configure it before all the
other layers in mdp composition. This helps in cases where we are
out of SMPs and framebuffer configuration fails owing to that.
Framebuffer being the fallback path, should always get highest
priority when reserving SMP blocks

Change-Id: Ie7a6903d1b9fb98b308689c81522571449bf2e8e
Merge "hwc: move fbzorder initialization code to hwc_fbupdate.cpp"
Merge "hwc: Configure framebuffer before other layers."