Handle non-POINTER memory types in getBuffer

Discussion:
http://ag/c/platform/frameworks/ml/+/9911408/42/nn/runtime/ExecutionPlan.cpp#926

Bug: 148458829
Bug: 149693818
Test: NNT_static
Change-Id: I035739db915eecef1859b58a4132fac58497fba2
Merged-In: I035739db915eecef1859b58a4132fac58497fba2
(cherry picked from commit f214bd8bc908d19e1a4669085cedffdfa47cee62)
5 files changed