taken bge followed by div takes 36 cycles

Created by: GTumbush

Component:RTL:

For specific combinations of bge followed by div the flush of the div takes 36 clock cycles. The branch is taken. Other combinations of branch/div/mul/rem and operands may reproduce this issue. I will enumerate a few below.

Steps to Reproduce

1. git hash: 2fe68a93c27db0bb514d567f79d3ba54045b51f6
2. git clone -b add_riscv_rand_instr_test_0 https://github.com/GTumbush/core-v-verif
3. cd cv32/sim/uvmt_cv32
4. make custom CUSTOM_PROG=riscv_branch_div

For:
bge a2, zero, fast_exit div a3, a6, a6

For:
bge a2, zero, fast_exit div a3, a6, s1

For:
bge a2, zero, fast_exit nop div a3, a6, a6