ath79: add new OF only target for QCA MIPS silicon

This target aims to replace ar71xx mid-term. The big part that is still
missing is making the MMIO/AHB wifi work using OF. NAND and mikrotik
subtargets will follow.

Signed-off-by: John Crispin <john@phrozen.org>

target/linux/ath79/image/lzma-loader/src/lzma-data.lds

@@ -0,0 +1,8 @@
+OUTPUT_ARCH(mips)
+SECTIONS {
+	.data.lzma : {
+		_lzma_data_start = .;
+		*(.data)
+		_lzma_data_end = .;
+	}
+}