package/nano: really disable nanorc for !BR2_PACKAGE_FILE

Commit 3c4fa30f7abf (package/nano: fix tiny build) tried to explicitly
disable libmagic/coloring/nanorc, but accidently passed 2x
--disable-libmagic instead of --disable-nanorc.  Fix that.

Cc: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 3c71477f663c64bf7e3455e235f610fe17d0956c)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/nano/nano.mk

@@ -34,7 +34,7 @@ ifeq ($(BR2_PACKAGE_FILE),y)
 NANO_DEPENDENCIES += file
 NANO_CONF_OPTS += --enable-libmagic --enable-color --enable-nanorc
 else
-NANO_CONF_OPTS += --disable-libmagic --disable-libmagic --disable-color
+NANO_CONF_OPTS += --disable-libmagic --disable-color --disable-nanorc
 endif # BR2_PACKAGE_FILE
 endif # BR2_PACKAGE_NANO_TINY