package/uboot-tools: remove absolute path of link source for fw_setenv

For portability reason, it isn't preferable to include an absolute path
in the link to fw_printenv which is in the same directory as fw_setenv.

Fixes: 42646265d5dd ("package/uboot-tools: add fw_printenv to host uboot tools")
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/uboot-tools/uboot-tools.mk

@@ -220,7 +220,7 @@ define HOST_UBOOT_TOOLS_INSTALL_CMDS
 	$(INSTALL) -m 0755 -D $(@D)/tools/dumpimage $(HOST_DIR)/bin/dumpimage
 	$(HOST_UBOOT_TOOLS_INSTALL_FIT_CHECK_SIGN)
 	$(INSTALL) -m 0755 -D $(@D)/tools/env/fw_printenv $(HOST_DIR)/bin/fw_printenv
-	ln -sf $(HOST_DIR)/bin/fw_printenv $(HOST_DIR)/bin/fw_setenv
+	ln -sf fw_printenv $(HOST_DIR)/bin/fw_setenv
 	$(HOST_UBOOT_TOOLS_INSTALL_ENVIMAGE)
 	$(HOST_UBOOT_TOOLS_INSTALL_BOOT_SCRIPT)
 endef