lz4: Use a private header for U-Boot

At present U-Boot has a header file called lz4.h for its own use. If the
host has its own lz4 header file installed (e.g. from the 'liblz4-dev'
package) then host builds will use that instead.

Move the U-Boot file into its own directory, as is done with various
other headers with the same problem.

Signed-off-by: Simon Glass <sjg@chromium.org>

cmd/unlz4.c

@@ -7,7 +7,7 @@
 #include <common.h>
 #include <command.h>
 #include <env.h>
-#include <lz4.h>
+#include <u-boot/lz4.h>
 
 static int do_unlz4(struct cmd_tbl *cmdtp, int flag, int argc,
 		    char *const argv[])

common/image.c

@@ -61,7 +61,6 @@ DECLARE_GLOBAL_DATA_PTR;
 #include <display_options.h>
 #include <gzip.h>
 #include <image.h>
-#include <lz4.h>
 #include <imximage.h>
 #include <relocate.h>
 #include <linux/lzo.h>
@@ -71,6 +70,7 @@ DECLARE_GLOBAL_DATA_PTR;
 #include <lzma/LzmaDec.h>
 #include <lzma/LzmaTools.h>
 #include <u-boot/crc.h>
+#include <u-boot/lz4.h>
 
 static const table_entry_t uimage_arch[] = {
 	{	IH_ARCH_INVALID,	"invalid",	"Invalid ARCH",	},

lib/lz4_wrapper.c

@@ -6,10 +6,10 @@
 #include <common.h>
 #include <compiler.h>
 #include <image.h>
-#include <lz4.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <asm/unaligned.h>
+#include <u-boot/lz4.h>
 
 static u16 LZ4_readLE16(const void *src)
 {

test/compression.c

@@ -9,11 +9,11 @@
 #include <gzip.h>
 #include <image.h>
 #include <log.h>
-#include <lz4.h>
 #include <malloc.h>
 #include <mapmem.h>
 #include <asm/io.h>
 
+#include <u-boot/lz4.h>
 #include <u-boot/zlib.h>
 #include <bzlib.h>