Kconfig symbols for drivers directory.

This commit adds the Kconfig files that describe the CONFIG
symbols that belongs to the drivers directory and subdirectories.

Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@linux.intel.com>
Change-Id: I924835ece11a3d597e77a55ace21d724dd5ddbe5

drivers/Kconfig

@@ -0,0 +1,47 @@
+config DRV_CONSOLE
+	bool
+	default y
+	help
+	This option enables the UART console driver.
+
+config DRV_SERIAL
+	bool
+	default n
+	help
+	This option enables the serial driver.
+
+if DRV_SERIAL
+source "drivers/serial/Kconfig"
+endif
+
+config DRV_TIMER
+	bool
+	default n
+	help
+	This option enables the timer driver.
+
+if DRV_TIMER
+source "drivers/timer/Kconfig"
+endif
+
+config DRV_INTCTL
+	bool
+	default n
+	help
+	This option enables the interrupt controller driver.
+
+config DRV_PCI
+	bool
+	default n
+	help
+	This option enables the PCI driver.
+
+config DRV_RANDOM
+	bool
+	default n
+	help
+	This option enables the random number generator driver.
+
+if DRV_RANDOM
+source "drivers/random/Kconfig"
+endif

drivers/random/Kconfig

@@ -0,0 +1,14 @@
+menu "Random Generation Configuration"
+config TEST_RANDOM_GENERATOR
+	bool
+	prompt "Non-random number generator"
+	default n
+	depends on !CUSTOM_RANDOM_GENERATOR
+	help
+	This option signifies that the kernel's random number APIs are
+	permitted to return values that are not truly random.
+
+	This capability is provided for testing purposes, when a truly random
+	number generator is not available. The non-random number generator
+	should not be used in a production environment.
+endmenu

drivers/serial/Kconfig

@@ -0,0 +1,23 @@
+config DRV_NS16550
+	bool
+	default n
+	help
+	This option enables the NS16550 serial driver.
+	This specific driver can be used for the serial hardware
+	available at the Generic PC and Quark.
+
+config DRV_K20_UART
+	bool
+	default n
+	help
+	This option enables the K20 serial driver.
+	This specific driver can be used for the serial hardware
+	available at the Freescale FRDM K64F BSP.
+
+config DRV_STELLARIS_UART
+	bool
+	default n
+	help
+	This option enables the Stellaris serial driver.
+	This specific driver can be used for the serial hardware
+	available at the Texas Instrument LM3S6965 BSP.

drivers/timer/Kconfig

@@ -0,0 +1,6 @@
+config PIT
+	bool "PIT (i8253)"
+	default n
+	depends on ARCH="x86"
+	help
+	This option selects legacy i8253 timer as system timer.