ARMv8: LS1043A: change macro CONFIG_ARMV8_PSCI definition

NXP/Freescale uses macro CONFIG_ARMV8_PSCI to enable their private PSCI
implementation in PPA firmware, but this macro naming too generic, so this
patch replaces it with a specic one CONFIG_FSL_PPA_ARMV8_PSCI.
And this macro CONFIG_ARMV8_PSCI will be used for a generic PSCI for ARMv8
which will be added in following patchs.

Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index 6772584..d28a422 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -44,6 +44,26 @@
 menu "Layerscape architecture"
 	depends on FSL_LSCH2 || FSL_LSCH3
 
+menu "Layerscape PPA"
+config FSL_LS_PPA
+	bool "FSL Layerscape PPA firmware support"
+	depends on ARCH_LS1043A || ARCH_LS1046A
+	select FSL_PPA_ARMV8_PSCI
+	help
+	  The FSL Primary Protected Application (PPA) is a software component
+	  which is loaded during boot stage, and then remains resident in RAM
+	  and runs in the TrustZone after boot.
+	  Say y to enable it.
+
+config FSL_PPA_ARMV8_PSCI
+	bool "PSCI implementation in PPA firmware"
+	depends on FSL_LS_PPA
+	help
+	  This config enables the ARMv8 PSCI implementation in PPA firmware.
+	  This is a private PSCI implementation and different from those
+	  implemented under the common ARMv8 PSCI framework.
+endmenu
+
 config SYS_FSL_MMDC
 	bool