DKMS support. Also fix broken Makefile.

Makefile

@@ -1312,6 +1312,9 @@ else
 
 export CONFIG_RTL8822BU = m
 
+endif
+
+
 all: modules
 
 modules:
@@ -1351,5 +1354,4 @@ clean:
 	rm -fr Module.symvers ; rm -fr Module.markers ; rm -fr modules.order
 	rm -fr *.mod.c *.mod *.o .*.cmd *.ko *~
 	rm -fr .tmp_versions
-endif
 

Makefile.dkms

@@ -0,0 +1,27 @@
+modname := rtl8822bu
+DKMS := dkms
+modver := 0.0.1
+
+# directory in which generated files are stored
+DKMS_DEST := /usr/src/$(modname)-$(modver)
+
+all: install
+
+src_install:
+	make clean
+	mkdir -p '$(DKMS_DEST)'
+	cp -r dkms.conf Kconfig Makefile.dkms Makefile platform core hal include os_dep rtl8822b.mk '$(DKMS_DEST)'
+	cp Makefile '$(DKMS_DEST)/Makefile'
+	sed 's/#MODULE_VERSION#/$(modver)/' dkms.conf > '$(DKMS_DEST)/dkms.conf'
+
+build: src_install
+	$(DKMS) add -m $(modname) -v $(modver) 2>/dev/null || true
+	$(DKMS) build -m $(modname) -v $(modver)
+
+install: build
+	$(DKMS) install -m $(modname) -v $(modver)
+
+uninstall:
+	$(DKMS) remove -m $(modname) -v $(modver) --all
+
+.PHONY: all src_install build install uninstall

dkms.conf

@@ -0,0 +1,7 @@
+PACKAGE_NAME="rtl8822bu"
+PACKAGE_VERSION="#MODULE_VERSION#"
+MAKE[0]="make USER_MODULE_NAME=$PACKAGE_NAME KVER=$kernelver"
+CLEAN="make clean"
+BUILT_MODULE_NAME[0]="rtl8822bu"
+DEST_MODULE_LOCATION[0]="/kernel/drivers/net"
+AUTOINSTALL="yes"