i2c: Kconfig: spelling fixes

Signed-off-by: NChris Packham <judge.packham@gmail.com>

drivers/i2c/Kconfig

@@ -157,9 +157,9 @@ config SYS_I2C_MESON
 config SYS_I2C_MXC
 	bool "NXP MXC I2C driver"
 	help
-	  Add support for the NXP I2C driver. This supports upto for bus
-	  channels and operating on standard mode upto 100 kbits/s and fast
-	  mode upto 400 kbits/s.
+	  Add support for the NXP I2C driver. This supports up to four bus
+	  channels and operating on standard mode up to 100 kbits/s and fast
+	  mode up to 400 kbits/s.
 
 if SYS_I2C_MXC
 config SYS_I2C_MXC_I2C1
@@ -363,7 +363,7 @@ config SYS_I2C_ROCKCHIP
 	help
 	  Add support for the Rockchip I2C driver. This is used with various
 	  Rockchip parts such as RK3126, RK3128, RK3036 and RK3288. All chips
-	  have several I2C ports and all are provided, controled by the
+	  have several I2C ports and all are provided, controlled by the
 	  device tree.
 
 config SYS_I2C_SANDBOX