armv7: ls1021a: Convert CONFIG_LS1_DEEP_SLEEP to Kconfig option

Move this option to Kconfig and clean up existing uses.
Signed-off-by: NYork Sun <york.sun@nxp.com>
CC: Hongbo Zhang <hongbo.zhang@nxp.com>
Reviewed-by: NTom Rini <trini@konsulko.com>

arch/arm/Kconfig

@@ -822,6 +822,7 @@ config TARGET_LS1021AQDS
 	select SUPPORT_SPL
 	select ARCH_LS1021A
 	select ARCH_SUPPORT_PSCI
+	select LS1_DEEP_SLEEP
 
 config TARGET_LS1021ATWR
 	bool "Support ls1021atwr"
@@ -829,6 +830,7 @@ config TARGET_LS1021ATWR
 	select SUPPORT_SPL
 	select ARCH_LS1021A
 	select ARCH_SUPPORT_PSCI
+	select LS1_DEEP_SLEEP
 
 config TARGET_LS1043AQDS
 	bool "Support ls1043aqds"

arch/arm/cpu/armv7/ls102xa/Kconfig

 config ARCH_LS1021A
 	bool "Freescale Layerscape LS1021A SoC"
 	select SYS_FSL_ERRATUM_A010315
+
+config LS1_DEEP_SLEEP
+	bool "Freescale Layerscape 1 deep sleep"

include/configs/ls1021aqds.h

@@ -10,7 +10,6 @@
 #define CONFIG_LS102XA
 
 #define CONFIG_ARMV7_PSCI_1_0
-#define CONFIG_LS1_DEEP_SLEEP
 
 #define CONFIG_ARMV7_SECURE_BASE	OCRAM_BASE_S_ADDR
 

include/configs/ls1021atwr.h

@@ -10,7 +10,6 @@
 #define CONFIG_LS102XA
 
 #define CONFIG_ARMV7_PSCI_1_0
-#define CONFIG_LS1_DEEP_SLEEP
 
 #define CONFIG_ARMV7_SECURE_BASE	OCRAM_BASE_S_ADDR