[bazel] build RAM binary VMEM
[bazel] build RAM binary VMEM

This enables running the JTAG SRAM inject and debug ROM E2E tests in DV.

Signed-off-by: Timothy Trippel <77eacc84f9735d3cbb55a271710be269fc3a5818@google.com>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan