Fix some minor Kconfig issues

- Remove Kconfig files that are no longer used:
    src/vencorcode/Kconfig
    src/soc/marvell/Kconfig
- Fix the drivers/sil/Kconfig to point to drivers/sil/3114 which had
the same code.
- Make sure all Kconfig files have linefeeds at the end. This can cause
problems, although it wasn't in this case.
- Include cpu/intel/model_65x/Kconfig which was not being included.

Change-Id: Ia57a1e0433e302fa9be557525dc966cae57059c9
Signed-off-by: Martin Roth <gaumless@gmail.com>
Reviewed-on: http://review.coreboot.org/9998
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/drivers/sil/3114/Kconfig

@@ -4,5 +4,3 @@ config DRIVERS_SIL_3114
 	help
 	It sets PCI class to IDE compatible native mode, allowing
 	SeaBIOS, FILO etc... to boot from it.
-
-

src/drivers/sil/Kconfig

@@ -1,8 +1 @@
-config DRIVERS_SIL_3114
-	bool "Silicon Image SIL3114"
-	default n
-	help
-	It sets PCI class to IDE compatible native mode, allowing
-	SeaBIOS, FILO etc... to boot from it.
-
-
+source "src/drivers/sil/3114/Kconfig"

src/drivers/xgi/Kconfig

@@ -1,2 +1,2 @@
 source src/drivers/xgi/common/Kconfig
-source src/drivers/xgi/z9s/Kconfig
+source src/drivers/xgi/z9s/Kconfig