exynos5: pinmux: check flag for i2c config

Some versions of Exynos5 supports High-Speed I2C,
on few interfaces, this change allows support this.
The new flag is: PINMUX_FLAG_HS_MODE

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Akshay Saraswat <akshay.s@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>

arch/arm/include/asm/arch-exynos/pinmux.h

@@ -23,6 +23,9 @@ enum {
 	/* Flags for SROM controller */
 	PINMUX_FLAG_BANK	= 3 << 0,       /* bank number (0-3) */
 	PINMUX_FLAG_16BIT	= 1 << 2,       /* 16-bit width */
+
+	/* Flags for I2C */
+	PINMUX_FLAG_HS_MODE	= 1 << 1,       /* I2C High Speed Mode */
 };
 
 /**