keys: Allow automatic module signature with SM3

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5K5HM
CVE: NA

--------------------------------

Support SM3 algorithm for module automatic signature during
"make modules_install" and "make modules_sign".
Signed-off-by: NGUO Zihua <guozihua@huawei.com>
Reviewed-by: NXiu Jianfeng <xiujianfeng@huawei.com>
Reviewed-by: NChao Liu <liuchao173@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

init/Kconfig

@@ -2307,6 +2307,9 @@ config MODULE_SIG_SHA512
 	bool "Sign modules with SHA-512"
 	select CRYPTO_SHA512
 
+config MODULE_SIG_SM3
+	bool "Sign modules with SM3"
+	select CRYPTO_SM3
 endchoice
 
 config MODULE_SIG_HASH
@@ -2317,6 +2320,7 @@ config MODULE_SIG_HASH
 	default "sha256" if MODULE_SIG_SHA256
 	default "sha384" if MODULE_SIG_SHA384
 	default "sha512" if MODULE_SIG_SHA512
+	default "sm3" if MODULE_SIG_SM3
 
 config MODULE_COMPRESS
 	bool "Compress modules on installation"