MIPS: Add support for vmlinuz.bin appended dtb

Add support for detecting a vmlinuz.bin appended dtb and overriding
the boot arguments to match the UHI interface.

To ensure _edata / __apendend_dtb points to the actual end of the
binary, align the data section to 16 bytes instead of the address
cursor.

Due to ld.script not going through the preprocessor, we can't check
for MIPS_ZBOOT_APPENDED_DTB being enabled, so always reserve space
for it. It should have no consequences for booting without it enabled
except 1 MiB more ram usage during the uncompressing stage.

Signed-off-by: Jonas Gorski <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: John Crispin <[email protected]>
Cc: Kevin Cernekee <[email protected]>
Cc: Florian Fainelli <[email protected]>
Cc: Aaro Koskinen <[email protected]>
Cc: Markos Chandras <[email protected]>
Cc: Andrew Bresticker <[email protected]>
Cc: Daniel Schwierzeck <[email protected]>
Cc: Paul Burton <[email protected]>
Cc: James Hartley <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/9741/
Signed-off-by: Ralf Baechle <[email protected]>

0 files changed, 0 insertions, 0 deletions