[PATCH v7 3/9] xen: update SUPPORT.md for static allocation

[Penny Zheng <Penny.Zheng@xxxxxxx>]

SUPPORT.md doesn't seem to explicitly say whether static memory is
supported, so this commit updates SUPPORT.md to add feature static
allocation tech preview for now.

Signed-off-by: Penny Zheng <penny.zheng@xxxxxxx>
Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
v7 changes:
- no change
---
v6 changes:
- use domain instead of sub-systems
---
v5 changes:
- new commit
---
 SUPPORT.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/SUPPORT.md b/SUPPORT.md
index 70e98964cb..8e040d1c1e 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -286,6 +286,13 @@ to boot with memory < maxmem.
 
     Status, x86 HVM: Supported
 
+### Static Allocation
+
+Static allocation refers to domains for which memory areas are
+pre-defined by configuration using physical address ranges.
+
+    Status, ARM: Tech Preview
+
 ### Memory Sharing
 
 Allow sharing of identical pages between guests
-- 
2.25.1