powerpc/85xx: Enable TWR_P102x in mpc85xx_basic_defconfig

Enable TWR_P102x option by default in mpc85xx_basic_defconfig to support
p1025twr board.
Signed-off-by: NPengbo Li <Pengbo.Li@freescale.com>
Signed-off-by: NScott Wood <scottwood@freescale.com>

arch/powerpc/configs/mpc85xx_basic_defconfig

@@ -12,6 +12,7 @@ CONFIG_P1010_RDB=y
 CONFIG_P1022_DS=y
 CONFIG_P1022_RDK=y
 CONFIG_P1023_RDB=y
+CONFIG_TWR_P102x=y
 CONFIG_SBC8548=y
 CONFIG_SOCRATES=y
 CONFIG_STX_GP3=y