package/mmc-utils: requires kernel headers >= 3.0

mmc-utils needs the mmc ioctls, introduced in linux 3.0.

Fixes:
    http://autobuild.buildroot.net/results/0c1/0c15e2b193418c6f0edbc98a6ea3957bdf71a98b

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/mmc-utils/Config.in

@@ -1,10 +1,11 @@
 config BR2_PACKAGE_MMC_UTILS
 	bool "mmc-utils"
 	depends on BR2_LARGEFILE
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
 	help
 	  MMC utils
 
 	  https://git.kernel.org/cgit/linux/kernel/git/cjb/mmc-utils.git
 
-comment "mmc-utils needs a toolchain w/ largefile"
-	depends on !BR2_LARGEFILE
+comment "mmc-utils needs a toolchain w/ largefile, headers >= 3.0"
+	depends on !BR2_LARGEFILE || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0