libotautil exports libfstab header.

otautil/roots.h includes <fstab/fstab.h>, but users of otautil/roots.h
don't need to explicitly depend on libfstab unless they have a real
need.

Also remove the unneeded include of <fstab/fstab.h> from
fsck_unshare_blocks.cpp.

Test: mmma -j bootable/recovery
Change-Id: Id3dc995a4769e631ab242843ee439bd94b2bf0bc

Android.bp

@@ -75,7 +75,6 @@ cc_defaults {
 
         // external dependencies
         "libhealthhalutils",
-        "libfstab",
     ],
 }
 
@@ -153,7 +152,6 @@ cc_binary {
 
     static_libs: [
         "libotautil",
-        "libfstab",
     ],
 
     init_rc: [
@@ -181,7 +179,6 @@ cc_binary {
 
     static_libs: [
         "libotautil",
-        "libfstab",
     ],
 
     init_rc: [

fsck_unshare_blocks.cpp

@@ -34,7 +34,6 @@
 #include <android-base/logging.h>
 #include <android-base/properties.h>
 #include <android-base/unique_fd.h>
-#include <fstab/fstab.h>
 
 #include "otautil/roots.h"
 

install/Android.bp

@@ -43,7 +43,6 @@ cc_defaults {
         // external dependencies
         "libvintf_recovery",
         "libvintf",
-        "libfstab",
     ],
 }
 

otautil/Android.bp

@@ -61,6 +61,10 @@ cc_library_static {
                 "libfs_mgr",
                 "libselinux",
             ],
+
+            export_static_lib_headers: [
+                "libfstab",
+            ],
         },
     },
 }