fix(mm): export phys

src/mm/root.zig

@@ -7,6 +7,7 @@ pub const page_size = 4096;
 
 pub const init = private.init.init;
 pub const vmem = private.vmem;
+pub const phys = private.phys;
 
 // 16 TB of maximum physical memory.
 // This should be fine on consumer hardware for at least a decade :^)
@@ -29,7 +30,7 @@ pub const MapFlags = packed struct {
     cache_disable: bool = false,
 };
 
-pub const Error = error{OutOfMemory, InvalidAddress, InvalidSize};
+pub const Error = error{ OutOfMemory, InvalidAddress, InvalidSize };
 
 pub inline fn page_to_pfn(addr: usize) Pfn {
     return @intCast(addr >> 12);