surfaceflinger: add support for mali blobs without fence support

Change-Id: Ida60543ea374f17c0808a181b12ca51ce2f2e222
ui: don't allocate FIMC1 memory

Our gralloc doesn't deal with FIMC1 memory usage. Hence there is
no reason for us to use FIMC1 memory allocation at this point of
time unless we know how to utilize FIMC in a proper way.

Change-Id: Ib491b0cf3713053f2936f044d4cf6fac6df070fb