Move most CONFIG_HAVE_BLOCK_DEVICE to Kconfig

config_fallbacks.h has some logic that sets HAVE_BLOCK_DEVICE
based on a list of enabled options.  Moving HAVE_BLOCK_DEVICE to
Kconfig allows us to drastically shrink the logic in
config_fallbacks.h

Signed-off-by: Adam Ford <aford173@gmail.com>
[trini: Rename HAVE_BLOCK_DEVICE to CONFIG_BLOCK_DEVICE]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/Kconfig b/arch/Kconfig
index 5d57d6d..e599e7a 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -74,6 +74,7 @@
 	select DM_SPI
 	select DM_GPIO
 	select DM_MMC
+	select HAVE_BLOCK_DEVICE
 	select LZO
 	imply CMD_GETTIME
 	imply CMD_HASH