ath6kl: create ath6kl_core.ko

Now ath6kl is ready for splitting core code to ath6kl_core.ko module.
This also makes it possible to link both sdio and usb code to kernel
at the same time, which earlier failed miserably.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath6kl/debug.c b/drivers/net/wireless/ath/ath6kl/debug.c
index 4ba6560..6b546dc 100644
--- a/drivers/net/wireless/ath/ath6kl/debug.c
+++ b/drivers/net/wireless/ath/ath6kl/debug.c
@@ -54,6 +54,7 @@
 
 	return rtn;
 }
+EXPORT_SYMBOL(ath6kl_printk);
 
 #ifdef CONFIG_ATH6KL_DEBUG
 
@@ -74,6 +75,7 @@
 
 	va_end(args);
 }
+EXPORT_SYMBOL(ath6kl_dbg);
 
 void ath6kl_dbg_dump(enum ATH6K_DEBUG_MASK mask,
 		     const char *msg, const char *prefix,
@@ -86,6 +88,7 @@
 		print_hex_dump_bytes(prefix, DUMP_PREFIX_OFFSET, buf, len);
 	}
 }
+EXPORT_SYMBOL(ath6kl_dbg_dump);
 
 #define REG_OUTPUT_LEN_PER_LINE	25
 #define REGTYPE_STR_LEN		100