Updated ApfGenerator to support WRITE/EWRITE opcodes.

Added support for WRITE opcode, which writes 1, 2, or 4 bytes from an
immediate value to the output buffer. Added support for EWRITE opcode,
which writes 1, 2, or 4 bytes from a register to the output buffer.

Bug: 293811969
Test: TH
Change-Id: Ia644a80bfd0655296f178010ee1a5a941021afd6
2 files changed