1、【优化】设置Flash环境变量功能，允许value中带'='号。

Signed-off-by: armink <armink.ztl@gmail.com>

flash/inc/flash.h

@@ -28,7 +28,7 @@ if (!(EXPR))                                                                  \
     while (1);                                                                \
 }
 /* EasyFlash software version number */
-#define FLASH_SW_VERSION                "1.01.28"
+#define FLASH_SW_VERSION                "1.02.11"
 
 typedef struct _flash_env{
     char *key;

flash/src/flash_env.c

@@ -309,8 +309,8 @@ static FlashErrCode create_env(const char *key, const char *value) {
         return FLASH_ENV_NAME_ERR;
     }
 
-    if (strstr(key, "=") || strstr(value, "=")) {
-        FLASH_INFO("Flash environment variables name or value can't contain '='.\n");
+    if (strstr(key, "=")) {
+        FLASH_INFO("Flash environment variables name can't contain '='.\n");
         return FLASH_ENV_NAME_ERR;
     }