freertos-smp: Update performance thresholds for VFS Open, Write, Close test with FreeRTOS SMP
freertos-smp: Update performance thresholds for VFS Open, Write, Close test with FreeRTOS SMP

This commit relaxes performance thresholds for VFS Open, Write and Close
test with FreeRTOS SMP enabled.

espressif/esp-idf,espressif/esp-idf,espressif/esp-idf,espressif/esp-idf