package/azure-iot-sdk-c: use full destination path for $(INSTALL)

The canonical way to use $(INSTALL) is to have a full destination
path, that includes the file name.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 59de11b0476699ddeb2cbcd30a524b849249956a)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/azure-iot-sdk-c/azure-iot-sdk-c.mk

@@ -46,7 +46,7 @@ endif
 
 define AZURE_IOT_SDK_C_INSTALL_STAGING_CMDS
 	$(foreach l,$(AZURE_IOT_SDK_C_LIBS), \
-		$(INSTALL) -D -m 0755 $(@D)/$(l) $(STAGING_DIR)/usr/lib/
+		$(INSTALL) -D -m 0755 $(@D)/$(l) $(STAGING_DIR)/usr/lib/$(notdir $(l))
 	)
 	cp -a $(@D)/c-utility/inc/* $(STAGING_DIR)/usr/include/
 	cp -a $(@D)/iothub_client/inc/* $(STAGING_DIR)/usr/include/
@@ -54,7 +54,7 @@ endef
 
 define AZURE_IOT_SDK_C_INSTALL_TARGET_CMDS
 	$(foreach l,$(AZURE_IOT_SDK_C_LIBS), \
-		$(INSTALL) -D -m 0755 $(@D)/$(l) $(TARGET_DIR)/usr/lib/
+		$(INSTALL) -D -m 0755 $(@D)/$(l) $(TARGET_DIR)/usr/lib/$(notdir $(l))
 	)
 endef