Revert "Use inline keyword without underscores consistently"

This reverts commit 58f06e11122723d68c5cb393aeb4ed1c7a2e7bfe.

Bare `inline` is not ANSI C compatible, and NDK users may be using
that.

Test: treehugger
Change-Id: I82c5424522142001cd59da63ef3fd440014451ad
diff --git a/libc/include/android/legacy_termios_inlines.h b/libc/include/android/legacy_termios_inlines.h
index e557525..a816b40 100644
--- a/libc/include/android/legacy_termios_inlines.h
+++ b/libc/include/android/legacy_termios_inlines.h
@@ -39,14 +39,14 @@
 #include <sys/ioctl.h>
 #include <sys/types.h>
 
-#define __BIONIC_TERMIOS_INLINE static inline
+#define __BIONIC_TERMIOS_INLINE static __inline
 #include <bits/termios_inlines.h>
 
 #endif
 
 #if __ANDROID_API__ < 35
 
-#define __BIONIC_TERMIOS_WINSIZE_INLINE static inline
+#define __BIONIC_TERMIOS_WINSIZE_INLINE static __inline
 #include <bits/termios_winsize_inlines.h>
 
 #endif