FPU compliance tests are passing 133/143

This pull request resolves the bugs find in FPU integration with ibex core. There were problem in FPU too, related to Multiplication and Division, those issues are also resolved.
These tests are failing right now:

FDIV-S-DYN-RDN-01        ... FAIL 
FDIV-S-DYN-RMM-01        ... FAIL 
FDIV-S-DYN-RUP-01        ... FAIL 
FDIV-S-RDN-01            ... FAIL 
FDIV-S-RMM-01            ... FAIL
FDIV-S-RUP-01            ... FAIL 
FSQRT-S-DYN-RDN-01       ... FAIL
FSQRT-S-DYN-RUP-01       ... FAIL 
FSQRT-S-RDN-01           ... FAIL
FSQRT-S-RUP-01           ... FAIL 

What's Changed

• Added FPU simulator options. by @zainrizwankhan in #6
• Removed RVF parameter define by @zainrizwankhan in #8
• Openram(sram) support added. by @sajjadahmed677 in #10
• FPU tests passing 133/143. by @zeeshanrafique23 in #12

New Contributors

• @zeeshanrafique23 made their first contribution in #12

Full Changelog: v0.0.0...v0.0.1