device/dram/ddr2: Use boolean for spd_dimm_is_registered_ddr2()

Change-Id: I475f0c7582148e9b9f86b542f753a6654e9f9135
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83901
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: coreboot org <coreboot.org@gmail.com>

src/device/dram/ddr2.c

@@ -24,13 +24,13 @@
  *
  * @param type DIMM type. This is byte[20] of the SPD.
  */
-int spd_dimm_is_registered_ddr2(enum spd_dimm_type_ddr2 type)
+bool spd_dimm_is_registered_ddr2(enum spd_dimm_type_ddr2 type)
 {
 	if ((type == SPD_DDR2_DIMM_TYPE_RDIMM) || (type == SPD_DDR2_DIMM_TYPE_72B_SO_RDIMM) ||
 			(type == SPD_DDR2_DIMM_TYPE_MINI_RDIMM))
-		return 1;
+		return true;
 
-	return 0;
+	return false;
 }
 
 /**

src/include/device/dram/ddr2.h

@@ -17,6 +17,7 @@
 #include <stdint.h>
 #include <spd.h>
 #include <device/dram/common.h>
+#include <stdbool.h>
 
 /** Maximum SPD size supported */
 #define SPD_SIZE_MAX_DDR2	128
@@ -154,7 +155,7 @@ struct dimm_attr_ddr2_st {
 	u32 serial;
 };
 
-int spd_dimm_is_registered_ddr2(enum spd_dimm_type_ddr2 type);
+bool spd_dimm_is_registered_ddr2(enum spd_dimm_type_ddr2 type);
 u8 spd_ddr2_calc_checksum(u8 *spd, int len);
 u32 spd_decode_spd_size_ddr2(u8 byte0);
 u32 spd_decode_eeprom_size_ddr2(u8 byte1);