board: ls1012ardb: do not use imply CONFIG_

Inside Kconfig we must not use the CONFIG_ prefix with the imply statement.

Fixes: 28e3c39e ("board: freescale: ls1012a2g5rdb: enable network
support on ls1012a2g5rdb")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

board/freescale/ls1012ardb/Kconfig

@@ -82,8 +82,8 @@ if FSL_PFE
 config BOARD_SPECIFIC_OPTIONS # dummy
 	def_bool y
 	select PHYLIB
-	imply CONFIG_PHYLIB_10G
-	imply CONFIG_PHY_AQUANTIA
+	imply PHYLIB_10G
+	imply PHY_AQUANTIA
 
 config SYS_LS_PFE_FW_ADDR
 	hex "Flash address of PFE firmware"