armv8: fsl-layerscape: Avoid LS1043A specifc defines

Other than LS1043A, LS1012A also Chassis Gen2 Architecture compliant.
So Avoid LS1043A specific defines in arch/arm

Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/fsl_serdes.h b/arch/arm/include/asm/arch-fsl-layerscape/fsl_serdes.h
index f71c2c1..c4fb7c9 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/fsl_serdes.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/fsl_serdes.h
@@ -55,7 +55,7 @@
 	FSL_SRDS_1  = 0,
 	FSL_SRDS_2  = 1,
 };
-#elif defined(CONFIG_LS1043A)
+#elif defined(CONFIG_FSL_LSCH2)
 enum srds_prtcl {
 	NONE = 0,
 	PCIE1,