ARM: socfpga: move CONFIG_BOOTDELAY to Kconfig for IS1 board

This recently added board missed the tree-wide migration of
CONFIG_BOOTDELAY.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Pavel Machek <pavel@denx.de>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/configs/socfpga_is1_defconfig b/configs/socfpga_is1_defconfig
index 7d43c72..658770b 100644
--- a/configs/socfpga_is1_defconfig
+++ b/configs/socfpga_is1_defconfig
@@ -9,14 +9,13 @@
 CONFIG_SPL=y
 CONFIG_SPL_STACK_R=y
 CONFIG_FIT=y
+CONFIG_BOOTDELAY=3
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y
 CONFIG_CMD_GREPENV=y
-# CONFIG_CMD_MEMTEST is not set
 # CONFIG_CMD_FLASH is not set
-# CONFIG_CMD_MMC is not set
 CONFIG_CMD_SF=y
 CONFIG_CMD_SPI=y
 CONFIG_CMD_I2C=y
@@ -36,7 +35,6 @@
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_BAR=y
 CONFIG_SPI_FLASH_STMICRO=y
-CONFIG_SPI_FLASH_USE_4K_SECTORS=y
 CONFIG_DM_ETH=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_SYS_NS16550=y