target/hexagon/idef-parser: Use gen_tmp for LPCFG

The GET_USR_FIELD macro initializes the output, so the initial assignment
of zero is discarded.  This is the only use of get_tmp_value outside of
parser-helper.c, so make it static.

Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
diff --git a/target/hexagon/idef-parser/idef-parser.y b/target/hexagon/idef-parser/idef-parser.y
index fae291e..c784726 100644
--- a/target/hexagon/idef-parser/idef-parser.y
+++ b/target/hexagon/idef-parser/idef-parser.y
@@ -783,7 +783,7 @@
          }
        | LPCFG
          {
-             $$ = gen_tmp_value(c, &@1, "0", 32, UNSIGNED);
+             $$ = gen_tmp(c, &@1, 32, UNSIGNED);
              OUT(c, &@1, "GET_USR_FIELD(USR_LPCFG, ", &$$, ");\n");
          }
        | EXTRACT '(' rvalue ',' rvalue ')'
diff --git a/target/hexagon/idef-parser/parser-helpers.c b/target/hexagon/idef-parser/parser-helpers.c
index 6fb5f31..be979da 100644
--- a/target/hexagon/idef-parser/parser-helpers.c
+++ b/target/hexagon/idef-parser/parser-helpers.c
@@ -305,7 +305,7 @@
     return rvalue;
 }
 
-HexValue gen_tmp_value(Context *c,
+static HexValue gen_tmp_value(Context *c,
                        YYLTYPE *locp,
                        const char *value,
                        unsigned bit_width,
diff --git a/target/hexagon/idef-parser/parser-helpers.h b/target/hexagon/idef-parser/parser-helpers.h
index 4c89498..1239d23 100644
--- a/target/hexagon/idef-parser/parser-helpers.h
+++ b/target/hexagon/idef-parser/parser-helpers.h
@@ -154,12 +154,6 @@
                  unsigned bit_width,
                  HexSignedness signedness);
 
-HexValue gen_tmp_value(Context *c,
-                       YYLTYPE *locp,
-                       const char *value,
-                       unsigned bit_width,
-                       HexSignedness signedness);
-
 HexValue gen_imm_value(Context *c __attribute__((unused)),
                        YYLTYPE *locp,
                        int value,