am33xx: Fix i2c sampling rate typo

Signed-off-by: Tom Rini <trini@ti.com>
Acked-by: Heiko Schocher <hs@denx.de>

arch/arm/include/asm/arch-am33xx/i2c.h

@@ -76,6 +76,6 @@ struct i2c {
 };
 
 #define I2C_IP_CLK			48000000
-#define I2C_INTERNAL_SAMLPING_CLK	12000000
+#define I2C_INTERNAL_SAMPLING_CLK	12000000
 
 #endif /* _I2C_H_ */