i2c: Select SYS_I2C_DW_ENABLE_STATUS_UNSUPPORTED for SPEAr

The DW I2C controller in the SPEAr SoCs doesn't support the enable
status register check. This patch selects
SYS_I2C_DW_ENABLE_STATUS_UNSUPPORTED for these boards.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>

drivers/i2c/Kconfig

@@ -80,6 +80,16 @@ config SYS_I2C_DW
 	  controller is used in various SoCs, e.g. the ST SPEAr, Altera
 	  SoCFPGA, Synopsys ARC700 and some Intel x86 SoCs.
 
+config SYS_I2C_DW_ENABLE_STATUS_UNSUPPORTED
+	bool "DW I2C Enable Status Register not supported"
+	depends on SYS_I2C_DW && (TARGET_SPEAR300 || TARGET_SPEAR310 || \
+		TARGET_SPEAR320 || TARGET_SPEAR600 || TARGET_X600)
+	default y
+	help
+	  Some versions of the Designware I2C controller do not support the
+	  enable status register. This config option can be enabled in such
+	  cases.
+
 config SYS_I2C_INTEL
 	bool "Intel I2C/SMBUS driver"
 	depends on DM_I2C