boot: Drop CMD_MTDPARTS condition for FDT_FIXUP_PARTITIONS

This is not needed, so drop it. Also use a capital 'O' for the option,
while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
Suggested-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/boot/Kconfig b/boot/Kconfig
index a1592a7..235c5a7 100644
--- a/boot/Kconfig
+++ b/boot/Kconfig
@@ -1476,8 +1476,7 @@
 	  exist / should not be used.
 
 config FDT_FIXUP_PARTITIONS
-	bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
-	depends on CMD_MTDPARTS
+	bool "Overwrite MTD partitions in DTS through defined in 'mtdparts'"
 	help
 	  Allow overwriting defined partitions in the device tree blob
 	  using partition info defined in the 'mtdparts' environment