[added to the 3.18 stable tree] MIPS: Fix siginfo.h to use strict posix types

From: James Hogan This patch has been added to the 3.18 stable tree. If you have any objections, please let us know. === [ Upstream commit 5daebc477da4dfeb31ae193d83084def58fd2697 ] Commit 85efde6f4e0d ("make exported headers use strict posix types")

[added to the 3.18 stable tree] MIPS: Fix siginfo.h to use strict posix types

From: James Hogan This patch has been added to the 3.18 stable tree. If you have any objections, please let us know. === [ Upstream commit 5daebc477da4dfeb31ae193d83084def58fd2697 ] Commit 85efde6f4e0d ("make exported headers use strict posix types") changed the asm-generic