Convert CONFIG_DP_DDR_DIMM_SLOTS_PER_CTLR to Kconfig

This converts the following to Kconfig:
   CONFIG_DP_DDR_DIMM_SLOTS_PER_CTLR

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index 5a809b4..3ea023d 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -511,6 +511,11 @@
 	depends on SYS_FSL_HAS_DP_DDR
 	default 2 if ARCH_LS2080A
 
+config DP_DDR_DIMM_SLOTS_PER_CTLR
+	int
+	depends on SYS_FSL_HAS_DP_DDR
+	default 1 if ARCH_LS2080A
+
 config DP_DDR_NUM_CTRLS
 	int
 	depends on SYS_FSL_HAS_DP_DDR
diff --git a/include/configs/ls2080aqds.h b/include/configs/ls2080aqds.h
index 21ca4af..96da4ab 100644
--- a/include/configs/ls2080aqds.h
+++ b/include/configs/ls2080aqds.h
@@ -25,9 +25,6 @@
 #define SPD_EEPROM_ADDRESS6	0x56	/* dummy address */
 #define SPD_EEPROM_ADDRESS	SPD_EEPROM_ADDRESS1
 #define CONFIG_SYS_SPD_BUS_NUM	0	/* SPD on I2C bus 0 */
-#ifdef CONFIG_SYS_FSL_HAS_DP_DDR
-#define CONFIG_DP_DDR_DIMM_SLOTS_PER_CTLR	1
-#endif
 
 #define CONFIG_SYS_NOR0_CSPR_EXT	(0x0)
 #define CONFIG_SYS_NOR_AMASK		IFC_AMASK(128*1024*1024)
diff --git a/include/configs/ls2080ardb.h b/include/configs/ls2080ardb.h
index 43bcc5a..835fff4 100644
--- a/include/configs/ls2080ardb.h
+++ b/include/configs/ls2080ardb.h
@@ -30,9 +30,6 @@
 #define SPD_EEPROM_ADDRESS6	0x56	/* dummy address */
 #define SPD_EEPROM_ADDRESS	SPD_EEPROM_ADDRESS1
 #define CONFIG_SYS_SPD_BUS_NUM	0	/* SPD on I2C bus 0 */
-#ifdef CONFIG_SYS_FSL_HAS_DP_DDR
-#define CONFIG_DP_DDR_DIMM_SLOTS_PER_CTLR	1
-#endif
 
 #if !defined(CONFIG_FSL_QSPI) || defined(CONFIG_TFABOOT)