efi_loader: type of efi_secure_mode

Variable efi_secure_mode is meant to hold a value of enum efi_secure_mode.
So it should not be defined as int but as enum efi_secure_mode.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>

lib/efi_loader/efi_variable.c

@@ -27,7 +27,7 @@ enum efi_secure_mode {
 };
 
 static bool efi_secure_boot;
-static int efi_secure_mode;
+static enum efi_secure_mode efi_secure_mode;
 static u8 efi_vendor_keys;
 
 #define READ_ONLY BIT(31)