signal.h: add linux/signal.h and asm/signal.h to UAPI compile-test coverage

linux/signal.h and asm/signal.h are currently excluded from the UAPI
compile-test because of the errors like follows:

HDRTEST usr/include/asm/signal.h
In file included from <command-line>:
./usr/include/asm/signal.h:103:9: error: unknown type name ‘size_t’
103 | size_t ss_size;
| ^~~~~~

The errors can be fixed by replacing size_t with __kernel_size_t.

Then, remove the no-header-test entries from user/include/Makefile.

Signed-off-by: Masahiro Yamada <[e-mail]>
Reviewed-by: Arnd Bergmann <[e-mail]>
Reviewed-by: Geert Uytterhoeven <[e-mail]>
Acked-by: Geert Uytterhoeven <[e-mail]>
Signed-off-by: Arnd Bergmann <[e-mail]>

arch/alpha/include/uapi/asm/signal.h

···
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 /* sigstack(2) is deprecated, and will be withdrawn in a future version

arch/arm/include/uapi/asm/signal.h

···
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 

arch/h8300/include/uapi/asm/signal.h

···
 typedef struct sigaltstack {
 	void *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 

arch/ia64/include/uapi/asm/signal.h

···
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 

arch/m68k/include/uapi/asm/signal.h

···
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 #endif /* _UAPI_M68K_SIGNAL_H */

arch/mips/include/uapi/asm/signal.h

···
 /* IRIX compatible stack_t  */
 typedef struct sigaltstack {
 	void __user *ss_sp;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 	int ss_flags;
 } stack_t;
 

arch/parisc/include/uapi/asm/signal.h

···
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 #endif /* !__ASSEMBLY */

arch/powerpc/include/uapi/asm/signal.h

···
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 

arch/s390/include/uapi/asm/signal.h

···
 typedef struct sigaltstack {
         void __user *ss_sp;
         int ss_flags;
-        size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 

arch/sparc/include/uapi/asm/signal.h

···
 #ifndef _UAPI__SPARC_SIGNAL_H
 #define _UAPI__SPARC_SIGNAL_H
 
+#include <asm/posix_types.h>
 #include <asm/sigcontext.h>
 #include <linux/compiler.h>
 
···
 typedef struct sigaltstack {
 	void			__user *ss_sp;
 	int			ss_flags;
-	size_t			ss_size;
+	__kernel_size_t		ss_size;
 } stack_t;
 
 

arch/x86/include/uapi/asm/signal.h

···
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 #endif /* __ASSEMBLY__ */

arch/xtensa/include/uapi/asm/signal.h

···
 typedef struct sigaltstack {
 	void *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 #endif	/* __ASSEMBLY__ */

include/uapi/asm-generic/signal.h

···
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 #endif /* __ASSEMBLY__ */

usr/include/Makefile

···
 #
 # Sorted alphabetically.
 no-header-test += asm/shmbuf.h
-no-header-test += asm/signal.h
 no-header-test += asm/ucontext.h
 no-header-test += drm/vmwgfx_drm.h
 no-header-test += linux/am437x-vpfe.h
···
 no-header-test += linux/phonet.h
 no-header-test += linux/reiserfs_xattr.h
 no-header-test += linux/sctp.h
-no-header-test += linux/signal.h
 no-header-test += linux/sysctl.h
 no-header-test += linux/usb/audio.h
 no-header-test += linux/v4l2-mediabus.h