lib/Module.mk: Don't install dynamic library when disabled

Do not attempt to install the dynamic library when build of that library
is disabled. Fixes the following installation error:

install -m 755 lib/libi2c.so.0.1.0 .../target/usr/lib
install: cannot stat 'lib/libi2c.so.0.1.0': No such file or directory
lib/Module.mk:90: recipe for target 'install-lib' failed

Cc: Angelo Compagnucci <angelo@amarulasolutions.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes: 9906b2ecb6 ("Makefile: Add flag to disable dynamic library")

lib/Module.mk

@@ -88,9 +88,11 @@ clean-lib:
 
 install-lib: $(addprefix $(LIB_DIR)/,$(LIB_TARGETS))
 	$(INSTALL_DIR) $(DESTDIR)$(libdir)
+ifeq ($(BUILD_DYNAMIC_LIB),1)
 	$(INSTALL_PROGRAM) $(LIB_DIR)/$(LIB_SHLIBNAME) $(DESTDIR)$(libdir)
 	$(LN) $(LIB_SHLIBNAME) $(DESTDIR)$(libdir)/$(LIB_SHSONAME)
 	$(LN) $(LIB_SHSONAME) $(DESTDIR)$(libdir)/$(LIB_SHBASENAME)
+endif
 ifeq ($(BUILD_STATIC_LIB),1)
 	$(INSTALL_DATA) $(LIB_DIR)/$(LIB_STLIBNAME) $(DESTDIR)$(libdir)
 endif