Remove usage of host ldconfig

To know whether the libiconv library is available, lm-sensors is using
the host ldconfig, which is obviously wrong in cross-compilation.

Moreover, the lm-sensors program making use of the iconv_*() API
already does it when __UCLIBC__ is *not* defined. In this case, the
iconv_*() functions are already part of the C library, so there is no
need to link against a separate library. Therefore, this patch simply
removes the libiconv handling.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

Index: b/prog/sensors/Module.mk
===================================================================
--- a/prog/sensors/Module.mk
+++ b/prog/sensors/Module.mk
@@ -37,10 +37,8 @@
 REMOVESENSORSBIN := $(patsubst $(MODULE_DIR)/%,$(DESTDIR)$(BINDIR)/%,$(PROGSENSORSTARGETS))
 REMOVESENSORSMAN := $(patsubst $(MODULE_DIR)/%,$(DESTDIR)$(PROGSENSORSMAN1DIR)/%,$(PROGSENSORSMAN1FILES))
 
-LIBICONV := $(shell if /sbin/ldconfig -p | grep -q '/libiconv\.so$$' ; then echo \-liconv; else echo; fi)
-
 $(PROGSENSORSTARGETS): $(PROGSENSORSSOURCES:.c=.ro) lib/$(LIBDEP_FOR_PROGS)
-	$(CC) $(EXLDFLAGS) -o $@ $(PROGSENSORSSOURCES:.c=.ro) $(LIBICONV) -Llib -lsensors -lm
+	$(CC) $(EXLDFLAGS) -o $@ $(PROGSENSORSSOURCES:.c=.ro) -Llib -lsensors -lm
 
 all-prog-sensors: $(PROGSENSORSTARGETS)
 user :: all-prog-sensors
