alsa-utils: fixup ncurses config script

Point the build to the proper (which BTW was broken since it pointed to
the wrong directory) ncurses config by using $(NCURSES_CONFIG_SCRIPTS)
from the ncurses package directly.
Also select the proper variant (widec/non-widec) in configure.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/alsa-utils/alsa-utils.mk

@@ -14,11 +14,11 @@ ALSA_UTILS_DEPENDENCIES = host-gettext host-pkgconf alsa-lib \
 	$(if $(BR2_PACKAGE_NCURSES),ncurses)
 
 ALSA_UTILS_CONF_ENV = \
-	ac_cv_prog_ncurses5_config=$(STAGING_DIR)/bin/ncurses5-config
+	ac_cv_prog_ncurses5_config=$(STAGING_DIR)/usr/bin/$(NCURSES_CONFIG_SCRIPTS)
 
 ALSA_UTILS_CONF_OPT = \
 	--disable-xmlto \
-	--with-curses=ncurses
+	--with-curses=$(if $(BR2_PACKAGE_NCURSES_WCHAR),ncursesw,ncurses)
 
 ifneq ($(BR2_PACKAGE_ALSA_UTILS_ALSAMIXER),y)
 ALSA_UTILS_CONF_OPT += --disable-alsamixer --disable-alsatest