package/libtomcrypt: use makefile.unix, brings pkgconfig support

Change from makefile to makefile.unix:
  - brings pkgconfig support (libtomcrypt.pc will be installed)
  - remove NODOCS (legacy, not used anymore)
  - remove INSTALL_USER/INSTALL_GROUP (not needed for makefile.unix)

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libtomcrypt/libtomcrypt.mk

@@ -24,13 +24,12 @@ LIBTOMCRYPT_CFLAGS += -fPIC
 endif
 
 define LIBTOMCRYPT_BUILD_CMDS
-	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) $(TARGET_CONFIGURE_OPTS) CFLAGS="$(LIBTOMCRYPT_CFLAGS)"
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) -f makefile.unix $(TARGET_CONFIGURE_OPTS) CFLAGS="$(LIBTOMCRYPT_CFLAGS)"
 endef
 
 define LIBTOMCRYPT_INSTALL_STAGING_CMDS
-	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) DESTDIR="$(STAGING_DIR)" \
-		PREFIX=/usr NODOCS=1 INSTALL_USER=$(shell id -u) \
-		INSTALL_GROUP=$(shell id -g) install
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) -f makefile.unix \
+		DESTDIR="$(STAGING_DIR)" PREFIX=/usr install
 endef
 
 $(eval $(generic-package))