[POWERPC] Export DCR symbols for modules

In order to compile drivers as modules that uses some of the
DCR functions, we need to export the symbols.  Example, EMAC
driver and other drivers that are under development use these
functions.
Signed-off-by: Murali Iyer <mniyer@us.ibm.com>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/sysdev/dcr.c

@@ -33,6 +33,7 @@ unsigned int dcr_resource_start(struct device_node *np, unsigned int index)
 
 	return dr[index * 2];
 }
+EXPORT_SYMBOL_GPL(dcr_resource_start);
 
 unsigned int dcr_resource_len(struct device_node *np, unsigned int index)
 {
@@ -44,6 +45,7 @@ unsigned int dcr_resource_len(struct device_node *np, unsigned int index)
 
 	return dr[index * 2 + 1];
 }
+EXPORT_SYMBOL_GPL(dcr_resource_len);
 
 #ifndef CONFIG_PPC_DCR_NATIVE
 
@@ -122,6 +124,7 @@ dcr_host_t dcr_map(struct device_node *dev, unsigned int dcr_n,
 	ret.token -= dcr_n * ret.stride;
 	return ret;
 }
+EXPORT_SYMBOL_GPL(dcr_map);
 
 void dcr_unmap(dcr_host_t host, unsigned int dcr_n, unsigned int dcr_c)
 {
@@ -133,5 +136,6 @@ void dcr_unmap(dcr_host_t host, unsigned int dcr_n, unsigned int dcr_c)
 	iounmap(h.token);
 	h.token = NULL;
 }
+EXPORT_SYMBOL_GPL(dcr_unmap);
 
 #endif /* !defined(CONFIG_PPC_DCR_NATIVE) */