fix riscv

Author: Yifan Zhu

libc/src/__support/OSUtil/linux/vdso.h

@@ -36,7 +36,7 @@ enum class VDSOSym {
 #include "aarch64/vdso.h"
 #elif defined(LIBC_TARGET_ARCH_IS_ARM)
 #include "arm/vdso.h"
-#elif defined(LIBC_TARGET_ARCH_IS_RISCV)
+#elif defined(LIBC_TARGET_ARCH_IS_ANY_RISCV)
 #include "riscv/vdso.h"
 #else
 #error "unknown arch"

libc/src/stdlib/rand_util.h

@@ -13,7 +13,6 @@
 #include "src/__support/macros/attributes.h"
 
 namespace LIBC_NAMESPACE {
-
 #ifdef LIBC_TARGET_ARCH_IS_GPU
 // Implement thread local storage on the GPU using local memory. Each thread
 // gets its slot in the local memory array and is private to the group.