ANDROID: add USERFAULTFD back to microdroid

It is used by the isolated compilation usecase.

Bug: 377677758
Bug: 284368385
Test: atest ComposHostTestCases:android.compos.test.ComposTestCase#testOdrefreshSpeed_os_microdroid
Change-Id: Iff89023a79c2006dd532969b5ba44fe51c55756a
Signed-off-by: Jiyong Park <jiyong@google.com>

arch/arm64/configs/microdroid_defconfig

diff --git a/arch/arm64/configs/microdroid_defconfig b/arch/arm64/configs/microdroid_defconfig
index 480aa49..61922eb 100644
--- a/arch/arm64/configs/microdroid_defconfig
+++ b/arch/arm64/configs/microdroid_defconfig
@@ -62,6 +62,7 @@
 # CONFIG_ZONE_DMA is not set
 # CONFIG_ZONE_DMA32 is not set
 CONFIG_ANON_VMA_NAME=y
+CONFIG_USERFAULTFD=y
 CONFIG_LRU_GEN=y
 CONFIG_NET=y
 CONFIG_UNIX=y

arch/x86/configs/microdroid_defconfig

diff --git a/arch/x86/configs/microdroid_defconfig b/arch/x86/configs/microdroid_defconfig
index 906f6413..615a14c 100644
--- a/arch/x86/configs/microdroid_defconfig
+++ b/arch/x86/configs/microdroid_defconfig
@@ -62,6 +62,7 @@
 CONFIG_DEFAULT_MMAP_MIN_ADDR=32768
 # CONFIG_ZONE_DMA is not set
 CONFIG_ANON_VMA_NAME=y
+CONFIG_USERFAULTFD=y
 CONFIG_LRU_GEN=y
 CONFIG_DAMON=y
 CONFIG_DAMON_PADDR=y