more android fixes to simplify PR

Author: hyp

Sources/Foundation/Data.swift

@@ -64,6 +64,8 @@ internal func malloc_good_size(_ size: Int) -> Int {
 import Glibc
 #elseif canImport(Musl)
 import Musl
+#elseif canImport(Android)
+import Android
 #elseif canImport(WASILibc)
 import WASILibc
 #endif

Sources/Foundation/FileManager+POSIX.swift

@@ -11,10 +11,6 @@
 internal func &(left: UInt32, right: mode_t) -> mode_t {
     return mode_t(left) & right
 }
-#elseif os(Android)
-internal func &(left: mode_t, right: Int32) -> mode_t {
-    return left & mode_t(right)
-}
 #endif
 
 #if os(WASI)

Sources/Foundation/FileManager.swift

@@ -25,7 +25,7 @@ import WinSDK
 import WASILibc
 #endif
 
-#if os(Android)
+#if canImport(Android)
 import Android
 #endif
 

Sources/Foundation/Host.swift

@@ -12,9 +12,9 @@
 import WinSDK
 #endif
 
-#if os(Android)
+#if canImport(Android)
     import Android
-    // Android Glibc differs a little with respect to the Linux Glibc.
+    // Android Bionic differs a little with respect to the Linux Glibc.
 
     // IFF_LOOPBACK is part of the enumeration net_device_flags, which needs to
     // convert to UInt32.