igvm: Relax unsafe_code restriction

Currently unsafe_code is forbidden for igvm code. In order to add
a C compatible API we will need to accept and work with raw C
pointers to data. This requires a relaxing of the unsafe rule from
'forbid' to 'deny' allowing the C API feature, when enabled,  to
override the setting.

Signed-off-by: Roy Hopkins <rhopkins@suse.de>

Author: roy-hopkins

igvm/src/lib.rs

@@ -9,7 +9,7 @@
 //! that this parser may not implement all the specified structure types or
 //! semantics defined in the IGVM file format.
 
-#![forbid(unsafe_code)]
+#![deny(unsafe_code)]
 
 use hv_defs::HvArm64RegisterName;
 use hv_defs::HvX64RegisterName;