drm/omap: remove dss_feat_get_clk_source_name()

We have two functions to return a name for clock sources for debugging
purposes: dss_feat_get_clk_source_name() and
dss_get_generic_clk_source_name().

The former is supposed to return a DSS IP version specific name for the
clock source, and the latter is supposed to return a more generic name.

All this seems a bit pointless, so let's remove the former one.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c
index 8285895..f490f23 100644
--- a/drivers/gpu/drm/omapdrm/dss/dsi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
@@ -1504,7 +1504,7 @@
 			cinfo->clkdco, cinfo->m);
 
 	seq_printf(s,	"DSI_PLL_HSDIV_DISPC (%s)\t%-16lum_dispc %u\t(%s)\n",
-			dss_feat_get_clk_source_name(dsi_module == 0 ?
+			dss_get_generic_clk_source_name(dsi_module == 0 ?
 				OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC :
 				OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC),
 			cinfo->clkout[HSDIV_DISPC],
@@ -1513,7 +1513,7 @@
 			"off" : "on");
 
 	seq_printf(s,	"DSI_PLL_HSDIV_DSI (%s)\t%-16lum_dsi %u\t(%s)\n",
-			dss_feat_get_clk_source_name(dsi_module == 0 ?
+			dss_get_generic_clk_source_name(dsi_module == 0 ?
 				OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI :
 				OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DSI),
 			cinfo->clkout[HSDIV_DSI],
@@ -1523,9 +1523,8 @@
 
 	seq_printf(s,	"- DSI%d -\n", dsi_module + 1);
 
-	seq_printf(s,	"dsi fclk source = %s (%s)\n",
-			dss_get_generic_clk_source_name(dsi_clk_src),
-			dss_feat_get_clk_source_name(dsi_clk_src));
+	seq_printf(s,	"dsi fclk source = %s\n",
+			dss_get_generic_clk_source_name(dsi_clk_src));
 
 	seq_printf(s,	"DSI_FCLK\t%lu\n", dsi_fclk_rate(dsidev));