Restored *64 attributes to RV_TESTCASE for 7 RV64M tests

[davidharrishmc]

Description

This PR restores the *64 attribute to RV_TESTCASE for 7 RV64M tests that lost the attributed in commit 9b503d7 that was pulled yesterday. When the *64 attributes are missing, I got the following errors while running riscof.

ERROR | Error in test: /home/harris/cvwtest/cvw/addins/riscv-arch-test/riscv-test-suite/rv64i_m/M/src/divu-01.S
Test Selected without the relevant extensions being available on DUT.
ERROR | Error in test: /home/harris/cvwtest/cvw/addins/riscv-arch-test/riscv-test-suite/rv64i_m/M/src/mul-01.S
Test Selected without the relevant extensions being available on DUT.
ERROR | Error in test: /home/harris/cvwtest/cvw/addins/riscv-arch-test/riscv-test-suite/rv64i_m/M/src/mulh-01.S
Test Selected without the relevant extensions being available on DUT.
ERROR | Error in test: /home/harris/cvwtest/cvw/addins/riscv-arch-test/riscv-test-suite/rv64i_m/M/src/mulhsu-01.S
Test Selected without the relevant extensions being available on DUT.
ERROR | Error in test: /home/harris/cvwtest/cvw/addins/riscv-arch-test/riscv-test-suite/rv64i_m/M/src/mulhu-01.S
Test Selected without the relevant extensions being available on DUT.
ERROR | Error in test: /home/harris/cvwtest/cvw/addins/riscv-arch-test/riscv-test-suite/rv64i_m/M/src/rem-01.S
Test Selected without the relevant extensions being available on DUT.
ERROR | Error in test: /home/harris/cvwtest/cvw/addins/riscv-arch-test/riscv-test-suite/rv64i_m/M/src/remu-01.S
Test Selected without the relevant extensions being available on DUT.

Related Issues

N/A

Ratified/Unratified Extensions

• [ x] Ratified
• Unratified

List Extensions

M extension test case

Reference Model Used

• [ x] SAIL
• Spike
• Other - < SPECIFY HERE >

Mandatory Checklist:

• [x ] All tests are compliant with the test-format spec present in this repo ?
• [ x] Ran the new tests on RISCOF with SAIL/Spike as reference model successfully ?
• [ n/a] Ran the new tests on RISCOF in coverage mode
• [n/a ] Link to Google-Drive folder containing the new coverage reports (See this for more info): < SPECIFY HERE >
• [n/a ] Link to PR in RISCV-ISAC from which the reports were generated : < SPECIFY HERE >
• [x ] Changelog entry created with a minor patch

Optional Checklist:

• RISCV-V CTG PR link if tests were generated using it : < SPECIFY HERE >
• Were the tests hand-written/modified ?
• Have you run these on any hard DUT model ? Please specify name and provide link if possible in the description
• If you have modified arch_test.h Please provide a detailed description of the changes in the Description section above.

[allenjbaum]

That's what can slip through when tests are completely regenerated...