hos: homogenize return values

bootloader/hos/pkg1.h

@@ -162,7 +162,7 @@ typedef struct _nx_bit_t
 
 const pkg1_id_t *pkg1_get_latest();
 const pkg1_id_t *pkg1_identify(u8 *pkg1);
-int  pkg1_decrypt(const pkg1_id_t *id, u8 *pkg1);
+bool  pkg1_decrypt(const pkg1_id_t *id, u8 *pkg1);
 const u8 *pkg1_unpack(void *wm_dst, u32 *wb_sz, void *sm_dst, void *ldr_dst, const pkg1_id_t *id, u8 *pkg1);
 void pkg1_secmon_patch(void *hos_ctxt, u32 secmon_base, bool t210b01);
 void pkg1_warmboot_patch(void *hos_ctxt);