stagefright amrnb: Add missing const qualifier to table declarations in headers

This was committed on the master branch of the opencore
repository in commit 5ce7a6fdf125116ffce2e692e14eafef1c807628,
based on AOSP contribution 10301.

Change-Id: Ie32b32c7407f449e382c0b4fd2d60a664e0daa33

Author: mstorsjo

media/libstagefright/codecs/amrnb/common/include/az_lsp.h

@@ -83,7 +83,7 @@ extern "C"
     ; EXTERNAL VARIABLES REFERENCES
     ; Declare variables used in this module but defined elsewhere
     ----------------------------------------------------------------------------*/
-    extern Word16 grid[];
+    extern const Word16 grid[];
 
     /*----------------------------------------------------------------------------
     ; SIMPLE TYPEDEF'S

media/libstagefright/codecs/amrnb/common/include/inv_sqrt.h

@@ -85,7 +85,7 @@ extern "C"
     ; EXTERNAL VARIABLES REFERENCES
     ; Declare variables used in this module but defined elsewhere
     ----------------------------------------------------------------------------*/
-    extern Word16 inv_sqrt_tbl[];
+    extern const Word16 inv_sqrt_tbl[];
     /*----------------------------------------------------------------------------
     ; SIMPLE TYPEDEF'S
     ----------------------------------------------------------------------------*/

media/libstagefright/codecs/amrnb/common/include/log2_norm.h

@@ -85,7 +85,7 @@ extern "C"
     ; EXTERNAL VARIABLES REFERENCES
     ; Declare variables used in this module but defined elsewhere
     ----------------------------------------------------------------------------*/
-    extern Word16 log2_tbl[];
+    extern const Word16 log2_tbl[];
     /*----------------------------------------------------------------------------
     ; SIMPLE TYPEDEF'S
     ----------------------------------------------------------------------------*/

media/libstagefright/codecs/amrnb/common/include/pow2.h

@@ -81,7 +81,7 @@ extern "C"
     ; EXTERNAL VARIABLES REFERENCES
     ; Declare variables used in this module but defined elsewhere
     ----------------------------------------------------------------------------*/
-    extern Word16 pow2_tbl[];
+    extern const Word16 pow2_tbl[];
     /*----------------------------------------------------------------------------
     ; SIMPLE TYPEDEF'S
     ----------------------------------------------------------------------------*/

media/libstagefright/codecs/amrnb/common/include/sqrt_l.h

@@ -82,7 +82,7 @@ extern "C"
     ; EXTERNAL VARIABLES REFERENCES
     ; Declare variables used in this module but defined elsewhere
     ----------------------------------------------------------------------------*/
-    extern Word16 sqrt_l_tbl[];
+    extern const Word16 sqrt_l_tbl[];
 
     /*----------------------------------------------------------------------------
     ; SIMPLE TYPEDEF'S