Rename __attribute__((packed)) --> __packed

Also unify __attribute__ ((..)) to __attribute__((..)) and
handle ((__packed__)) like ((packed))

Change-Id: Ie60a51c3fa92b5009724a5b7c2932e361bf3490c
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/15921
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/include/reg_script.h

@@ -107,7 +107,7 @@ struct reg_script_bus_entry {
 	void (*reg_script_write)(struct reg_script_context *ctx);
 };
 
-#define REG_SCRIPT_TABLE_ATTRIBUTE __attribute__ ((used, section(".rsbe_init")))
+#define REG_SCRIPT_TABLE_ATTRIBUTE __attribute__((used, section(".rsbe_init")))
 
 #define REG_SCRIPT_BUS_ENTRY(bus_entry_)				\
 	const struct reg_script_bus_entry *rsbe_ ## bus_entry_	\