[hmac, rtl] Do not skip padding after a hash stop command #3656

Job	Run time
Lint (quick)	3m 9s
Lint (slow)	12m 13s
Airgapped build	10m 26s
Verible lint	1m 4s
Build documentation	4m 57s
Run OTBN crypto tests	21m 52s
CW305's Bitstream	22m 28s
Run OTBN smoke Test	2m 38s
Verilated Earl Grey	1h 26m 57s
Verilated English Breakfast	8m 2s
Build Docker Containers	2m 34s
Build and test software	13m 45s
Earl Grey for CW310 / Build bitstream	1h 10m 21s
Earl Grey for CW310 Hyperdebug / Build bitstream	1h 29m 36s
Earl Grey for CW340 / Build bitstream	1h 30m 0s
CW310 ROM Tests / FPGA test	46m 33s
CW310 Test ROM Tests / FPGA test	3m 21s
CW310 ROM_EXT Tests / FPGA test	7m 27s
CW310 SiVal ROM_EXT Tests / FPGA test	34m 59s
CW310 SiVal Tests / FPGA test	24m 40s
CW310 Manufacturing Tests / FPGA test	30m 23s
Cache bitstreams to GCP	0s
CW340 ROM_EXT Tests / FPGA test	6m 59s
CW340 Test ROM Tests / FPGA test	3m 16s
CW340 Manufacturing Tests / FPGA test	42m 50s
CW340 ROM Tests / FPGA test	45s
CW340 SiVal Tests / FPGA test	18m 47s
CW340 SiVal ROM_EXT Tests / FPGA test	4m 30s
Verify FPGA jobs	22s
	11h 4m 54s

Provide feedback