util-linux-dmesg: Add missing install section

Package util-linux-dmesg is broken (at least) in Barrier Breaker git repo
as you can select it within menuconfig, it will compile (as a part of
util-linux) but it will not install as install section is missing from
package Makefile.

Signed-off-by: Tomasz Wasiak <tjwasiak@gmail.com>

SVN-Revision: 43069

package/utils/util-linux/Makefile

@@ -152,6 +152,7 @@ endef
 define Package/dmesg
 $(call Package/util-linux/Default)
   TITLE:=print or control the kernel ring buffer
+  DEPENDS:= +librt
 endef
 
 define Package/dmesg/description
@@ -438,6 +439,11 @@ define Package/cfdisk/install
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/.libs/cfdisk $(1)/usr/sbin/
 endef
 
+define Package/dmesg/install
+	$(INSTALL_DIR) $(1)/usr/sbin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/dmesg $(1)/usr/sbin/
+endef
+
 define Package/fdisk/install
 	$(INSTALL_DIR) $(1)/usr/sbin
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/.libs/fdisk $(1)/usr/sbin/