drm/ast: Rename ast_init_dram_2300 to ast_post_chip_2300

The function does more than initializing the DRAM and in turns
calls other functions to do the actual init. This will keeping
things more consistent with the upcoming AST2500 POST code.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Joel Stanley <joel@jms.id.au>
Tested-by: Y.C. Chen <yc_chen@aspeedtech.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/ast/ast_post.c

@@ -31,7 +31,7 @@
 
 #include "ast_dram_tables.h"
 
-static void ast_init_dram_2300(struct drm_device *dev);
+static void ast_post_chip_2300(struct drm_device *dev);
 
 void ast_enable_vga(struct drm_device *dev)
 {
@@ -381,7 +381,7 @@ void ast_post_gpu(struct drm_device *dev)
 
 	if (ast->config_mode == ast_use_p2a) {
 		if (ast->chip == AST2300 || ast->chip == AST2400)
-			ast_init_dram_2300(dev);
+			ast_post_chip_2300(dev);
 		else
 			ast_init_dram_reg(dev);
 
@@ -1589,7 +1589,7 @@ static void ddr2_init(struct ast_private *ast, struct ast2300_dram_param *param)
 
 }
 
-static void ast_init_dram_2300(struct drm_device *dev)
+static void ast_post_chip_2300(struct drm_device *dev)
 {
 	struct ast_private *ast = dev->dev_private;
 	struct ast2300_dram_param param;