php: add missing indirect dependency on !avr32 for mysql extensions

Also fix the comment.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/php/Config.ext

@@ -106,6 +106,7 @@ config BR2_PACKAGE_PHP_EXT_MYSQL
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_USE_MMU # mysql
 	depends on BR2_TOOLCHAIN_HAS_THREADS # mysql
+	depends on !BR2_avr32 # mysql
 	select BR2_PACKAGE_MYSQL
 	help
 	  MySQL support
@@ -115,6 +116,7 @@ config BR2_PACKAGE_PHP_EXT_MYSQLI
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_USE_MMU # mysql
 	depends on BR2_TOOLCHAIN_HAS_THREADS # mysql
+	depends on !BR2_avr32 # mysql
 	select BR2_PACKAGE_MYSQL
 	select BR2_PACKAGE_PHP_EXT_MYSQL
 	help
@@ -132,13 +134,15 @@ config BR2_PACKAGE_PHP_EXT_PDO_MYSQL
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_USE_MMU # mysql
 	depends on BR2_TOOLCHAIN_HAS_THREADS # mysql
+	depends on !BR2_avr32 # mysql
 	select BR2_PACKAGE_MYSQL
 	help
 	  PDO driver for MySQL
 
-comment "MySQL drivers need a toolchain w/ C++"
+comment "MySQL drivers need a toolchain w/ C++, threads"
 	depends on BR2_USE_MMU
-	depends on !BR2_INSTALL_LIBSTDCPP
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS
+	depends on !BR2_avr32
 
 config BR2_PACKAGE_PHP_EXT_PDO_POSTGRESQL
 	bool "PostgreSQL"