php: disable FPM interface on Sparc

Building fails with "Sparc v8 and predecessors are not and will not be
supported (see bug report 53310)", so we disable FPM on Sparc.

Fixes:

  http://autobuild.buildroot.net/results/6a86f6cf07f6b6dccd7bfaab6d7682f9faf3527b/

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

package/php/Config.in

@@ -29,6 +29,8 @@ config BR2_PACKAGE_PHP_SAPI_CLI
 config BR2_PACKAGE_PHP_SAPI_FPM
 	bool "FPM interface"
 	depends on BR2_USE_MMU
+	# "Sparc v8 and predecessors are not and will not be supported"
+	depends on !BR2_sparc
 	help
 	  PHP-FPM (FastCGI Process Manager)