soc/amd/picasso/smu: only print time for actual command execution
When waiting for the SMU to be ready to accept a new command, the time
spent waiting shouldn't be printed as command execution time. Also fix
the time unit in the print statement.
Change-Id: I6b97b11cd9efae7029779ee2096d4f2224cecd72
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41751
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>