avrdude: Depend on elfutils instead of libelf to get the libelf library

The elfutils package provides a more recent version of the libelf, so
let's use it. It will allow to remove the libelf package and to avoid
conflicts with two packages providing the same library.

[Peter: adjust toolchain options comment to match]
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/avrdude/Config.in

@@ -1,15 +1,21 @@
 config BR2_PACKAGE_AVRDUDE
 	bool "avrdude"
-	select BR2_PACKAGE_LIBELF
+	select BR2_PACKAGE_ELFUTILS
 	select BR2_PACKAGE_LIBUSB
 	select BR2_PACKAGE_LIBUSB_COMPAT
 	select BR2_PACKAGE_NCURSES
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_LARGEFILE # elfutils
+	depends on BR2_USE_WCHAR # elfutils
+	depends on !BR2_avr32 # elfutils
+	depends on !BR2_bfin # elfutils
 	help
 	  avrdude is a programmer for Atmel AVR microcontrollers
 	  this package provides a version with new linuxspi driver
 
 	  https://github.com/kcuzner/avrdude
 
-comment "avrdude needs a toolchain w/ threads"
-	depends on !BR2_TOOLCHAIN_HAS_THREADS
+comment "avrdude needs a toolchain w/ threads, largefile, wchar"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS || !BR2_LARGEFILE || !BR2_USE_WCHAR
+	depends on !BR2_avr32
+	depends on !BR2_bfin

package/avrdude/avrdude.mk

@@ -12,7 +12,7 @@ AVRDUDE_SUBDIR = avrdude
 # Sources coming from git, without generated configure and Makefile.in
 # files.
 AVRDUDE_AUTORECONF = YES
-AVRDUDE_DEPENDENCIES = libelf libusb libusb-compat ncurses \
+AVRDUDE_DEPENDENCIES = elfutils libusb libusb-compat ncurses \
 	host-flex host-bison
 AVRDUDE_LICENSE = GPLv2+
 AVRDUDE_LICENSE_FILES = avrdude/COPYING