treewide: Move stdlib.h to commonlib

This patch moves commonlib/stdlib.h -> commonlib/bsd/stdlib.h, since
all code is BSD licensed anyway.
It also moves some code from libpayloads stdlib.h to
commonlib/bsd/stdlib.h so that it can be shared with coreboot. This is
useful for a subsequent commit that adds devicetree.c into commonlib.

Also we don't support DMA on arm platforms in coreboot (only libpayload)
therefore `dma_malloc()` has been removed and `dma_coherent()` has been
moved to architecture specific functions. Any architecture that tries to
use `dma_coherent()` now will get a compile time error. In order to not
break current platforms like mb/google/herobrine which make use of the
commonlib/storage/sdhci.c controller which in turn uses `dma_coherent` a
stub has been added to arch/arm64/dma.c.

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I3a7ab0d1ddcc7ce9af121a61b4d4eafc9e563a8a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77969
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

payloads/libpayload/tests/mocks/die.c

@@ -1,16 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-#include <tests/test.h>
-#include <stdbool.h>
-
-void die_work(const char *file, const char *func, int line, const char *fmt, ...)
-{
-	/* Failing asserts are jumping to the user code (test) if expect_assert_failed() was
-	   previously called. Otherwise it jumps to the cmocka code and fails the test. */
-	mock_assert(false, "Mock assetion called", file, line);
-
-	/* Should never be reached */
-	print_error("%s() called...\n", __func__);
-	while (1)
-		;
-}