h8300: move definition of __kernel_size_t etc. to posix_types.h

These types should be defined in posix_types.h, not in bitsperlong.h .

With these defines moved, h8300-specific bitsperlong.h is no longer
needed since Kbuild will automatically create a wrapper of
include/uapi/asm-generic/bitsperlong.h
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/h8300/include/uapi/asm/bitsperlong.h → arch/h8300/include/uapi/asm/posix_types.h

-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _UAPI__ASM_H8300_BITS_PER_LONG
-#define _UAPI__ASM_H8300_BITS_PER_LONG
+/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
+#ifndef _UAPI_ASM_POSIX_TYPES_H
+#define _UAPI_ASM_POSIX_TYPES_H
 
-#include <asm-generic/bitsperlong.h>
-
-#if !defined(__ASSEMBLY__)
 /* h8300-unknown-linux required long */
 #define __kernel_size_t __kernel_size_t
 typedef unsigned long	__kernel_size_t;
 typedef long		__kernel_ssize_t;
 typedef long		__kernel_ptrdiff_t;
-#endif
 
-#endif /* _UAPI__ASM_H8300_BITS_PER_LONG */
+#include <asm-generic/posix_types.h>
+
+#endif /* _UAPI_ASM_POSIX_TYPES_H */