Convert CONFIG_SYS_FSL_ERRATUM_A010315 to Kconfig option

Move this option to Kconfig and clean up existing uses.

Signed-off-by: York Sun <york.sun@nxp.com>
CC: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index a823d39..f8057ba 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -1,9 +1,17 @@
 config ARCH_LS1012A
 	bool "Freescale Layerscape LS1012A SoC"
 	select SYS_FSL_MMDC
+	select SYS_FSL_ERRATUM_A010315
+
+config ARCH_LS1043A
+	bool "Freescale Layerscape LS1043A SoC"
+	select SYS_FSL_ERRATUM_A010315
 
 config ARCH_LS1046A
 	bool "Freescale Layerscape LS1046A SoC"
 
 config SYS_FSL_MMDC
 	bool "Freescale Multi Mode DDR Controller"
+
+config SYS_FSL_ERRATUM_A010315
+	bool "Workaround for PCIe erratum A010315"