configs: seli8: set envsize to 0x4000

During the mainlining of the board this was by mistake set to sector size.
Our user space env scripts are expecting envsize of 0x4000, and setting
this differently will break our cross-platform compatibility.

Signed-off-by: Aleksandar Gerasimovski <aleksandar.gerasimovski@hitachi-powergrids.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/configs/pg_wcom_seli8_defconfig b/configs/pg_wcom_seli8_defconfig
index a61b826..a00334b 100644
--- a/configs/pg_wcom_seli8_defconfig
+++ b/configs/pg_wcom_seli8_defconfig
@@ -7,7 +7,7 @@
 CONFIG_PIGGY_MAC_ADDRESS_OFFSET=3
 CONFIG_SYS_MEMTEST_START=0x80000000
 CONFIG_SYS_MEMTEST_END=0x9fffffff
-CONFIG_ENV_SIZE=0x20000
+CONFIG_ENV_SIZE=0x4000
 CONFIG_ENV_SECT_SIZE=0x20000
 CONFIG_SYS_I2C_MXC_I2C1=y
 CONFIG_SYS_I2C_MXC_I2C2=y