Test that automatic thread stack allocation works for
both user and kernel threads.

Signed-off-by: Flavio Ceolin <[email protected]>

Add a new API to dynamically allocate kernel objects that allow
passing an arbitrary size. This new API allows to allocate dynamic
thread stack.

Signed-off-by: Flavio Ceolin <[email protected]>

Allocate kernel object for userspace thread stack.

Signed-off-by: Flavio Ceolin <[email protected]>

Add support for dynamic thread stack objects. A new container
for this kernel object was added to avoid its alignment constraint
to all dynamic objects.

Signed-off-by: Flavio Ceolin <[email protected]>

Fix the preference allocation logic. If pool is preferred but POOL_SIZE
is 0 or pool allocation fails, it fallbacks to heap allocation if it
is enabled.

Signed-off-by: Flavio Ceolin <[email protected]>

Since the rbtree is using as list because we no longer
can assume that the object pointer is the address of the
data field in the dynamic object struct, lets just use
the already existent dlist for tracking dynamic kernel
objects.

Signed-off-by: Flavio Ceolin <[email protected]>