tests: Add opt 'sof-logger' to verify-sof-firmware

Add opt 'sof-logger' (OPT_VAL['s']=1 to
verify-sof-firmware-load.sh test.
This is the fix for:
/case-lib/lib.sh: line 955: [: -eq: unary operator expected

Signed-off-by: Artur Wilczak <arturx.wilczak@intel.com>

Author: arikgreen

test-case/verify-sof-firmware-load.sh

@@ -17,6 +17,9 @@ set -e
 # shellcheck source=case-lib/lib.sh
 source "$(dirname "${BASH_SOURCE[0]}")"/../case-lib/lib.sh
 
+OPT_NAME['s']='sof-logger'   OPT_DESC['s']="Open sof-logger trace the data will store at $LOG_ROOT"
+OPT_HAS_ARG['s']=0             OPT_VAL['s']=1
+
 func_opt_parse_option "$@"
 
 disable_kernel_check_point