3rdparty/opensbi: Update to latest ToT

That's 3 years of development, including adapting to new, shiny,
Cascade of Attention-Deficit Teenagers[0] induced incompatible
assembler syntaxes.

Signed-off-by: Patrick Georgi <patrick@coreboot.org>

[0] https://web.archive.org/web/20220824045741/https://www.jwz.org/doc/cadt.html

Change-Id: I8606700149ca74e93b85d78546a29df2916d39b2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67456
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>

src/arch/riscv/opensbi.c

@@ -3,6 +3,7 @@
 /* OpenSBI wants to make its own definitions for some of our compiler.h macros. */
 #undef __packed
 #undef __noreturn
+#undef __aligned
 
 #include <sbi/fw_dynamic.h>
 #include <arch/boot.h>