target/xtensa: implement GPIO32

GPIO32 is not in the core ISA, but it was widely used in Diamond Cores.
This implementation doesn't do actual I/O and doesn't handle the case of
GPIO32 state being a part of coprocessor.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/target/xtensa/cpu.h b/target/xtensa/cpu.h
index 80e9b47..d9404aa 100644
--- a/target/xtensa/cpu.h
+++ b/target/xtensa/cpu.h
@@ -108,6 +108,7 @@ enum {
 };
 
 enum {
+    EXPSTATE = 230,
     THREADPTR = 231,
     FCR = 232,
     FSR = 233,