seccomp: Allow read(2) and getdents(2) in x86_64 for UBSan's sake

This change allows the use of read(2) and getdents(2) so that UBSan can
work correctly on x86_64.

Bug: 111999822
Test: CtsWrapWrapDebugTestCases
Change-Id: I44aac17fffdffc5c3f5d87fb3d876af28c8044b2
diff --git a/libc/SECCOMP_WHITELIST_APP.TXT b/libc/SECCOMP_WHITELIST_APP.TXT
index 21839a6..faa2d63 100644
--- a/libc/SECCOMP_WHITELIST_APP.TXT
+++ b/libc/SECCOMP_WHITELIST_APP.TXT
@@ -33,8 +33,8 @@
 int	stat64:stat64(const char*, struct stat64*)	arm,x86,mips
 
 # b/34813887
-int	open:open(const char *path, int oflag, ... ) arm,x86,mips
-int	getdents:getdents(unsigned int fd, struct linux_dirent *dirp, unsigned int count) arm,x86,mips
+int	open:open(const char *path, int oflag, ... ) arm,x86,x86_64,mips
+int	getdents:getdents(unsigned int fd, struct linux_dirent *dirp, unsigned int count) arm,x86,x86_64,mips
 
 # b/34719286
 int	eventfd:eventfd(unsigned int initval, int flags)	arm,x86,mips