realtek: Create rtl838x subtarget

mv generic/target.mk to rtl838x/target.mk in order to create
an initial makefile for the rtl838x sub-architecture

Signed-off-by: Birger Koblitz <git@birger-koblitz.de>

diff --git a/target/linux/realtek/generic/target.mk b/target/linux/realtek/rtl838x/target.mk
similarity index 100%
rename from target/linux/realtek/generic/target.mk
rename to target/linux/realtek/rtl838x/target.mk