busybox: fix symbol names, reported by Alex Brand

package/busybox/Makefile

@@ -5,7 +5,7 @@ include $(ADK_TOPDIR)/rules.mk
 
 PKG_NAME:=		busybox
 PKG_VERSION:=		1.26.2
-PKG_RELEASE:=		1
+PKG_RELEASE:=		2
 PKG_HASH:=		da3e44913fc1a9c9b7c5337ea5292da518683cbff32be630777f565d6036af16
 PKG_DESCR:=		core utilities for embedded systems
 PKG_SECTION:=		base/apps

package/busybox/config/shell/Config.in

@@ -331,17 +331,17 @@ config BUSYBOX_BASH_IS_HUSH
 
 endchoice
 
-config BUSYBOX_SH_MATH_SUPPORT
+config BUSYBOX_FEATURE_SH_MATH
 	bool "POSIX math support"
 	default y
 	depends on BUSYBOX_ASH || BUSYBOX_HUSH
 	help
 	  Enable math support in the shell via $((...)) syntax.
 
-config BUSYBOX_SH_MATH_SUPPORT_64
+config BUSYBOX_FEATURE_SH_MATH_64
 	bool "Extend POSIX math support to 64 bit"
 	default y
-	depends on BUSYBOX_SH_MATH_SUPPORT
+	depends on BUSYBOX_FEATURE_SH_MATH
 	help
 	  Enable 64-bit math support in the shell. This will make the shell
 	  slightly larger, but will allow computation with very large numbers.