kconfig: ls102xa: Change the prompt messages

As NOR/NAND/SD boot are all supported on LS1021AQDS/TWR
boards, the prompt message "Support ls1021aqds_nor" in
Kconfig is not clear. This patch changes it to
"Support ls1021aqds".
Signed-off-by: NAlison Wang <alison.wang@freescale.com>
Reviewed-by: NYork Sun <yorksun@freescale.com>

arch/arm/Kconfig

@@ -728,12 +728,12 @@ config TARGET_LS2085A_SIMU
 	select ARM64
 
 config TARGET_LS1021AQDS
-	bool "Support ls1021aqds_nor"
+	bool "Support ls1021aqds"
 	select CPU_V7
 	select SUPPORT_SPL
 
 config TARGET_LS1021ATWR
-	bool "Support ls1021atwr_nor"
+	bool "Support ls1021atwr"
 	select CPU_V7
 	select SUPPORT_SPL