staging: csr: make CsrUInt16ToHex static

We do this by moving it from csr_util.c to csr_wifi_hip_card_sdio_intr.c
as that's the only place that called it.

Cc: Mikko Virkkilä <mikko.virkkila@bluegiga.com>
Cc: Lauri Hintsala <Lauri.Hintsala@bluegiga.com>
Cc: Riku Mettälä <riku.mettala@bluegiga.com>
Cc: Veli-Pekka Peltola <veli-pekka.peltola@bluegiga.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/csr/csr_util.c

@@ -15,24 +15,6 @@
 #include "csr_pmem.h"
 #include "csr_util.h"
 
-/*------------------------------------------------------------------*/
-/* Base conversion */
-/*------------------------------------------------------------------*/
-/* Convert signed 32 bit (or less) integer to string */
-void CsrUInt16ToHex(u16 number, char *str)
-{
-    u16 index;
-    u16 currentValue;
-
-    for (index = 0; index < 4; index++)
-    {
-        currentValue = (u16) (number & 0x000F);
-        number >>= 4;
-        str[3 - index] = (char) (currentValue > 9 ? currentValue + 55 : currentValue + '0');
-    }
-    str[4] = '\0';
-}
-
 MODULE_DESCRIPTION("CSR Operating System Kernel Abstraction");
 MODULE_AUTHOR("Cambridge Silicon Radio Ltd.");
 MODULE_LICENSE("GPL and additional rights");

drivers/staging/csr/csr_util.h

@@ -18,11 +18,6 @@ extern "C" {
 #include <linux/types.h>
 #include "csr_macro.h"
 
-/*------------------------------------------------------------------*/
-/* Base conversion */
-/*------------------------------------------------------------------*/
-void CsrUInt16ToHex(u16 number, char *str);
-
 #define CsrOffsetOf(st, m)  ((size_t) & ((st *) 0)->m)
 
 #ifdef __cplusplus

drivers/staging/csr/csr_wifi_hip_card_sdio_intr.c

@@ -128,6 +128,22 @@ void unifi_debug_log_to_buf(const char *fmt, ...)
 } /* unifi_debug_log_to_buf() */
 
 
+/* Convert signed 32 bit (or less) integer to string */
+static void CsrUInt16ToHex(u16 number, char *str)
+{
+    u16 index;
+    u16 currentValue;
+
+    for (index = 0; index < 4; index++)
+    {
+        currentValue = (u16) (number & 0x000F);
+        number >>= 4;
+        str[3 - index] = (char) (currentValue > 9 ? currentValue + 55 : currentValue + '0');
+    }
+    str[4] = '\0';
+}
+
+
 /*
  * ---------------------------------------------------------------------------
  *  unifi_debug_hex_to_buf