Add implemented functions to rtcd that were missed

"ext-partition-types: Add 4:1 partitions" added a number SIMD
functions. The SAD functions introduced in that patch were not
added to the rtcd file and were not getting called.

Hash of "ext-partition-types: Add 4:1 partitions"
93c39e91

Change-Id: I47094799e27d66f74311ff0bcff23ecb7eed8a76