Update package locations.

Because the abi will depend on the core types for marshalling (usermem,
context, safemem, safecopy), these need to be flattened from the sentry
directory. These packages contain no sentry-specific details.

PiperOrigin-RevId: 291811289

pkg/sentry/memmap/BUILD

@@ -38,11 +38,11 @@ go_library(
     ],
     visibility = ["//pkg/sentry:internal"],
     deps = [
+        "//pkg/context",
         "//pkg/log",
-        "//pkg/sentry/context",
         "//pkg/sentry/platform",
-        "//pkg/sentry/usermem",
         "//pkg/syserror",
+        "//pkg/usermem",
     ],
 )
 
@@ -51,5 +51,5 @@ go_test(
     size = "small",
     srcs = ["mapping_set_test.go"],
     library = ":memmap",
-    deps = ["//pkg/sentry/usermem"],
+    deps = ["//pkg/usermem"],
 )

pkg/sentry/memmap/mapping_set.go

@@ -18,7 +18,7 @@ import (
 	"fmt"
 	"math"
 
-	"gvisor.dev/gvisor/pkg/sentry/usermem"
+	"gvisor.dev/gvisor/pkg/usermem"
 )
 
 // MappingSet maps offsets into a Mappable to mappings of those offsets. It is

pkg/sentry/memmap/mapping_set_test.go

@@ -18,7 +18,7 @@ import (
 	"reflect"
 	"testing"
 
-	"gvisor.dev/gvisor/pkg/sentry/usermem"
+	"gvisor.dev/gvisor/pkg/usermem"
 )
 
 type testMappingSpace struct {

pkg/sentry/memmap/memmap.go

@@ -18,9 +18,9 @@ package memmap
 import (
 	"fmt"
 
-	"gvisor.dev/gvisor/pkg/sentry/context"
+	"gvisor.dev/gvisor/pkg/context"
 	"gvisor.dev/gvisor/pkg/sentry/platform"
-	"gvisor.dev/gvisor/pkg/sentry/usermem"
+	"gvisor.dev/gvisor/pkg/usermem"
 )
 
 // Mappable represents a memory-mappable object, a mutable mapping from uint64