ARM: imx_v6_v7_defconfig: Select CONFIG_IKCONFIG_PROC

It is useful to know how the kernel was configured via:
zcat /proc/config.gz ,so select the CONFIG_IKCONFIG_PROC option.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm/configs/imx_v6_v7_defconfig

@@ -3,6 +3,8 @@ CONFIG_SYSVIPC=y
 CONFIG_FHANDLE=y
 CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
 CONFIG_LOG_BUF_SHIFT=18
 CONFIG_CGROUPS=y
 CONFIG_RELAY=y
@@ -76,8 +78,8 @@ CONFIG_CAN=y
 CONFIG_CAN_FLEXCAN=y
 CONFIG_BT=y
 CONFIG_BT_HCIUART=y
-CONFIG_BT_HCIUART_LL=y
 CONFIG_BT_HCIUART_H4=y
+CONFIG_BT_HCIUART_LL=y
 CONFIG_CFG80211=y
 CONFIG_MAC80211=y
 CONFIG_RFKILL=y