spi: Kconfig: Create ISSI Kconfig entry

Add ISSI to Kconfig to make it selectable via menuconfig.
Also convert all current platforms.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/stmark2_defconfig b/configs/stmark2_defconfig
index 1b14aff..48e851d 100644
--- a/configs/stmark2_defconfig
+++ b/configs/stmark2_defconfig
@@ -23,6 +23,7 @@
 # CONFIG_NET is not set
 CONFIG_MTD_DEVICE=y
 CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_ISSI=y
 CONFIG_SPI_FLASH_MTD=y
 CONFIG_SPI=y
 CONFIG_CF_SPI=y
diff --git a/configs/zynq_cc108_defconfig b/configs/zynq_cc108_defconfig
index ac8e1f1..26fdafb 100644
--- a/configs/zynq_cc108_defconfig
+++ b/configs/zynq_cc108_defconfig
@@ -35,6 +35,7 @@
 CONFIG_MMC_SDHCI_ZYNQ=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_BAR=y
+CONFIG_SPI_FLASH_ISSI=y
 CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_STMICRO=y
diff --git a/configs/zynq_cse_qspi_defconfig b/configs/zynq_cse_qspi_defconfig
index c094a5e..0b2cd8c 100644
--- a/configs/zynq_cse_qspi_defconfig
+++ b/configs/zynq_cse_qspi_defconfig
@@ -55,6 +55,7 @@
 # CONFIG_MMC is not set
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_BAR=y
+CONFIG_SPI_FLASH_ISSI=y
 CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_STMICRO=y
diff --git a/configs/zynq_zc702_defconfig b/configs/zynq_zc702_defconfig
index dd5f834..bac538c 100644
--- a/configs/zynq_zc702_defconfig
+++ b/configs/zynq_zc702_defconfig
@@ -52,6 +52,7 @@
 CONFIG_MMC_SDHCI_ZYNQ=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_BAR=y
+CONFIG_SPI_FLASH_ISSI=y
 CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_STMICRO=y
diff --git a/configs/zynq_zc706_defconfig b/configs/zynq_zc706_defconfig
index ea61a96..991784d 100644
--- a/configs/zynq_zc706_defconfig
+++ b/configs/zynq_zc706_defconfig
@@ -50,6 +50,7 @@
 CONFIG_MMC_SDHCI_ZYNQ=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_BAR=y
+CONFIG_SPI_FLASH_ISSI=y
 CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_STMICRO=y
diff --git a/configs/zynq_zc770_xm010_defconfig b/configs/zynq_zc770_xm010_defconfig
index 5697ad4..6364e2b 100644
--- a/configs/zynq_zc770_xm010_defconfig
+++ b/configs/zynq_zc770_xm010_defconfig
@@ -42,6 +42,7 @@
 CONFIG_MMC_SDHCI_ZYNQ=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_BAR=y
+CONFIG_SPI_FLASH_ISSI=y
 CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_STMICRO=y
diff --git a/configs/zynq_zc770_xm013_defconfig b/configs/zynq_zc770_xm013_defconfig
index e83222d..833753e 100644
--- a/configs/zynq_zc770_xm013_defconfig
+++ b/configs/zynq_zc770_xm013_defconfig
@@ -36,6 +36,7 @@
 # CONFIG_MMC is not set
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_BAR=y
+CONFIG_SPI_FLASH_ISSI=y
 CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_STMICRO=y