i2c: Adding makefile to build code

Adds the necessary changes to Kbuild and Makefiles to enable I2C
driver support to build.

Change-Id: I3113ccbbbbb4e06ef134ca73f509d2755a2abb59
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>

drivers/Kconfig

@@ -53,4 +53,6 @@ source "drivers/pci/Kconfig"
 
 source "drivers/spi/Kconfig"
 
+source "drivers/i2c/Kconfig"
+
 endmenu

drivers/Makefile

@@ -12,3 +12,4 @@ obj-$(CONFIG_BLUETOOTH) += bluetooth/
 obj-$(CONFIG_UART_SIMPLE) += simple/
 obj-$(CONFIG_SPI) += spi/
 obj-$(CONFIG_GPIO) += gpio/
+obj-$(CONFIG_I2C) += i2c/

drivers/i2c/Kconfig

@@ -0,0 +1,59 @@
+# Kconfig - I2C configuration options
+
+#
+# Copyright (c) 2015 Intel Corporation
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1) Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the following disclaimer.
+#
+# 2) Redistributions in binary form must reproduce the above copyright notice,
+# this list of conditions and the following disclaimer in the documentation
+# and/or other materials provided with the distribution.
+#
+# 3) Neither the name of Intel Corporation nor the names of its contributors
+# may be used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+#
+# I2C options
+#
+menu "I2C"
+
+config I2C
+	bool "Enable I2C drivers"
+	default n
+
+config I2C_STATUS_DELAY
+	int "Delay for controller response"
+	depends on I2C
+	default 1000
+
+config I2C_CLOCK_SPEED
+	int "Set the clock speed for I2C"
+	default 32
+	depends on I2C
+
+config I2C_DEBUG
+	bool "Enable I2C debug options"
+	default n
+	depends on I2C
+	help
+	This option enables the debug features for I2C connections
+
+endmenu