Update to kernel headers v5.2.

Test: Booted a taimen, ran unit bionic unit tests.
Change-Id: I3522c59793bbcef98ea515996a481d92f14b8816
diff --git a/libc/kernel/uapi/linux/elf-em.h b/libc/kernel/uapi/linux/elf-em.h
index 99835ae..d1ed1f6 100644
--- a/libc/kernel/uapi/linux/elf-em.h
+++ b/libc/kernel/uapi/linux/elf-em.h
@@ -45,14 +45,19 @@
 #define EM_M32R 88
 #define EM_MN10300 89
 #define EM_OPENRISC 92
+#define EM_ARCOMPACT 93
 #define EM_XTENSA 94
 #define EM_BLACKFIN 106
+#define EM_UNICORE 110
 #define EM_ALTERA_NIOS2 113
 #define EM_TI_C6000 140
+#define EM_HEXAGON 164
+#define EM_NDS32 167
 #define EM_AARCH64 183
 #define EM_TILEPRO 188
 #define EM_MICROBLAZE 189
 #define EM_TILEGX 191
+#define EM_ARCV2 195
 #define EM_RISCV 243
 #define EM_BPF 247
 #define EM_CSKY 252