config: add a small_flash feature

this causes KALLSYMS to be off by default

Signed-off-by: John Crispin <john@phrozen.org>

config/Config-kernel.in

@@ -62,7 +62,7 @@ config KERNEL_PROFILING
 
 config KERNEL_KALLSYMS
 	bool "Compile the kernel with symbol table information"
-	default y
+	default y if !SMALL_FLASH
 	help
 	  This will give you more information in stack traces from kernel oopses.
 

scripts/target-metadata.pl

@@ -36,6 +36,7 @@ sub target_config_features(@) {
 		/mips16/ and $ret .= "\tselect HAS_MIPS16\n";
 		/rfkill/ and $ret .= "\tselect RFKILL_SUPPORT\n";
 		/low_mem/ and $ret .= "\tselect LOW_MEMORY_FOOTPRINT\n";
+		/small_flash/ and $ret .= "\tselect SMALL_FLASH\n";
 		/nand/ and $ret .= "\tselect NAND_SUPPORT\n";
 	}
 	return $ret;

target/Config.in

@@ -70,6 +70,9 @@ config USES_UBIFS
 config LOW_MEMORY_FOOTPRINT
 	bool
 
+config SMALL_FLASH
+	bool
+
 config NOMMU
 	bool