Update getNonExtensionSize() for TENSOR_OEM_BYTE

This makes getNonExtensionSize() behave the same as the old
nonExtensionOperandSizeOfData(). See kSizeOfDataTypeOEM.

Bug: N/A
Test: NNT_static --gtest_filter=ValidationTestModel.AddOEMOperand with change I63fa286e
Change-Id: I29496d32ac9abbeca372f36442afce7f4c8a017c
Merged-In: I29496d32ac9abbeca372f36442afce7f4c8a017c
(cherry picked from commit 0e5ccfd96ecfa0b1849f498544e5b0ca51c83136)
1 file changed