linux-user/hppa: Handle TARGET_EWOULDBLOCK as TARGET_EAGAIN

Linux kernel defines EWOULDBLOCK as EAGAIN (since before v2.6.12-rc2).

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210704183755.655002-3-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

linux-user/hppa/target_syscall.h

@@ -27,6 +27,8 @@ struct target_pt_regs {
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
 
+#undef  TARGET_EWOULDBLOCK
+#define TARGET_EWOULDBLOCK     TARGET_EAGAIN /* Operation would block */
 #undef  TARGET_ENOMSG
 #define TARGET_ENOMSG          35
 #undef  TARGET_EIDRM