defconfig: espressobin: Add support for ISSI SPI flashes

Enable support of ISSI SPI flashes found on EspressoBIN boards

Change-Id: I6de61c48f108fb4f410f321b9db45887d23212e5
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Reviewed-on: http://vgitil04.il.marvell.com:8080/61455


Tested-by: iSoC Platform CI <ykjenk@marvell.com>
Reviewed-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Reviewed-by: Stefan Chulski <stefanc@marvell.com>
Reviewed-by: Stefan Roese <sr@denx.de>

configs/mvebu_espressobin-88f3720_defconfig

@@ -56,6 +56,7 @@ CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_SPI_FLASH_WINBOND=y
 CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_ISSI=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MARVELL=y
 CONFIG_PHY_GIGE=y