chore: updated platform-support.md

Author: AMG

src/doc/rustc/src/platform-support.md

@@ -220,6 +220,7 @@ target | std | host | notes
 `armv6-unknown-netbsd-eabihf` | ? |  |
 `armv6k-nintendo-3ds` | * |  | ARMv6K Nintendo 3DS, Horizon (Requires devkitARM toolchain)
 `armv7-apple-ios` | ✓ |  | ARMv7 iOS, Cortex-a8
+`armv7-sony-vita-eabihf` | ? |  | ARM Cortex-A9 Sony PlayStation Vita (Requires VITASDK toolchain)
 `armv7-unknown-linux-uclibceabihf` | ✓ | ? | ARMv7 Linux uClibc
 `armv7-unknown-freebsd` | ✓ | ✓ | ARMv7 FreeBSD
 `armv7-unknown-netbsd-eabihf` | ✓ | ✓ |