igep00x0: Enable UBI fastmap

Fastmap significantly reduces flash scan time, enable it by default.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Heiko Schocher <hs@denx.de>
diff --git a/configs/igep0020_defconfig b/configs/igep0020_defconfig
index 3856d3f..a86a009 100644
--- a/configs/igep0020_defconfig
+++ b/configs/igep0020_defconfig
@@ -34,6 +34,7 @@
 CONFIG_LED_STATUS_BOOT_ENABLE=y
 CONFIG_LED_STATUS_BOOT=0
 CONFIG_MMC_OMAP_HS=y
+CONFIG_MTD_UBI_FASTMAP=y
 CONFIG_SYS_NS16550=y
 CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y