FMC: create drivers/fmc and toplevel Kconfig question

This commit creates the drivers/fmc directory and puts the necessary
hooks for kbuild and kconfig.  The code is currently a placeholder
that only registers an empty bus.

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Juan David Gonzalez Cobas <dcobas@cern.ch>
Acked-by: Emilio G. Cota <cota@braap.org>
Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/fmc/Kconfig b/drivers/fmc/Kconfig
new file mode 100644
index 0000000..e287902
--- /dev/null
+++ b/drivers/fmc/Kconfig
@@ -0,0 +1,17 @@
+#
+# FMC (ANSI-VITA 57.1) bus support
+#
+
+menuconfig FMC
+	tristate "FMC support"
+	help
+
+	  FMC (FPGA Mezzanine Carrier) is a mechanical and electrical
+	  standard for mezzanine cards that plug into a carrier board.
+	  This kernel subsystem supports the matching between carrier
+	  and mezzanine based on identifiers stored in the internal I2C
+	  EEPROM, as well as having carrier-independent drivers.
+
+	  The framework was born outside of the kernel and at this time
+	  the off-tree code base is more complete.  Code and documentation
+	  is at git://ohwr.org/fmc-projects/fmc-bus.git .