Enable sun4i-ss stats

configname: CONFIG_CRYPTO_DEV_SUN4I_SS_DEBUG

Linux Kernel Configuration
└─>Cryptographic API
└─>Hardware crypto devices
└─>Enable sun4i-ss stats
In linux kernel since version 5.2 (release Date: 2019-07-07)  
Say y to enable sun4i-ss debug stats.
This will create /sys/kernel/debug/sun4i-ss/stats for displaying
the number of requests per algorithm.