php-imagick: propagate BR2_USE_MMU dependency

php-imagick selects imagemagick, and imagemagick 'depends on
BR2_USE_MMU', but this dependency was not propagated to
php-imagick. This commit fixes that.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/php-imagick/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_PHP_IMAGICK
 	bool "php-imagick"
 	depends on BR2_PACKAGE_PHP
+	depends on BR2_USE_MMU # imagemagick
 	select BR2_PACKAGE_IMAGEMAGICK
 	help
 	  PHP wrapper to the ImageMagick library.