16k: bionic: Replace hardcoded page size with getpagesize()

The optional block size for the /proc filesystem is set to page size.
The tests must reflect the same.

Bug: 315510913
Change-Id: Ifccf833829b4ea4ff9c7d375208124cdc43af04a
diff --git a/tests/sys_statvfs_test.cpp b/tests/sys_statvfs_test.cpp
index 73b2a96..5dd7b93 100644
--- a/tests/sys_statvfs_test.cpp
+++ b/tests/sys_statvfs_test.cpp
@@ -25,7 +25,7 @@
 #include <string>
 
 template <typename StatVfsT> void Check(StatVfsT& sb) {
-  EXPECT_EQ(4096U, sb.f_bsize);
+  EXPECT_EQ(getpagesize(), static_cast<int>(sb.f_bsize));
   EXPECT_EQ(0U, sb.f_bfree);
   EXPECT_EQ(0U, sb.f_ffree);
   EXPECT_EQ(255U, sb.f_namemax);