Refactors androidx.compose.foundation:foundation-layout to the androidx.compose.foundation.layout package name

Bug: b/160233169
Test: ./gradlew checkApi
Relnote: N/A
Change-Id: Id0bb67fe007f9e7fed5a2fa1d504ba6d77886eeb

diff --git a/ui/ui-material/src/main/java/androidx/ui/material/Menu.kt b/ui/ui-material/src/main/java/androidx/ui/material/Menu.kt
index b5feadd..52da391 100644
--- a/ui/ui-material/src/main/java/androidx/ui/material/Menu.kt
+++ b/ui/ui-material/src/main/java/androidx/ui/material/Menu.kt

@@ -39,13 +39,13 @@
 import androidx.compose.foundation.ProvideTextStyle
 import androidx.compose.foundation.ScrollableColumn
 import androidx.compose.foundation.clickable
-import androidx.ui.layout.ColumnScope
-import androidx.ui.layout.ExperimentalLayout
-import androidx.ui.layout.IntrinsicSize
-import androidx.ui.layout.fillMaxWidth
-import androidx.ui.layout.padding
-import androidx.ui.layout.preferredSizeIn
-import androidx.ui.layout.preferredWidth
+import androidx.compose.foundation.layout.ColumnScope
+import androidx.compose.foundation.layout.ExperimentalLayout
+import androidx.compose.foundation.layout.IntrinsicSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.preferredSizeIn
+import androidx.compose.foundation.layout.preferredWidth
 import androidx.ui.material.ripple.RippleIndication
 import androidx.ui.unit.Density
 import androidx.ui.unit.IntBounds