General ALU Operations Version 2 Instructions and Tests Encodings Updated

	include/opcode:
            * riscv-opc.h: Added corresponding MATCH and MASK
              macros for General ALU Operations.

        gas/testsuite/gas/riscv:
            * gas/testsuite/gas/riscv/cv-alu-abs.d: Test Encodings Updated.
            * gas/testsuite/gas/riscv/cv-alu-addnr.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-addrn.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-addrnr.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-addun.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-addunr.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-addurn.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-addurnr.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-clip.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-clipr.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-clipu.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-clipur.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-extbs.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-extbz.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-exths.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-exthz.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-march-rv32i-xcorev.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-max.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-maxu.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-min.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-minu.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-slet.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-sletu.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-subnr.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-subrn.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-subrnr.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-subun.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-subunr.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-suburn.d: Likewise.
            * gas/testsuite/gas/riscv/cv-alu-suburnr.d: Likewise.

Signed-off-by: Nandni Jamnadas <nandni.jamnadas@embecosm.com>