HSI: omap_ssi_core: fix kilo to be "k" not "K"

Kilo should be "k" not "K", fix it it comments and messages.
Signed-off-by: Pavel Machek <pavel@ucw.cz>

index 88e48b3..41a09f5 100644
Signed-off-by: Sebastian Reichel <sre@kernel.org>

drivers/hsi/controllers/omap_ssi_core.c

@@ -334,7 +334,7 @@ static int ssi_clk_event(struct notifier_block *nb, unsigned long event,
 	case POST_RATE_CHANGE:
 		dev_dbg(&ssi->device, "post rate change (%lu -> %lu)\n",
 			clk_data->old_rate, clk_data->new_rate);
-		omap_ssi->fck_rate = DIV_ROUND_CLOSEST(clk_data->new_rate, 1000); /* KHz */
+		omap_ssi->fck_rate = DIV_ROUND_CLOSEST(clk_data->new_rate, 1000); /* kHz */
 
 		for (i = 0; i < ssi->num_ports; i++) {
 			omap_port = omap_ssi->port[i];
@@ -467,9 +467,9 @@ static int ssi_hw_init(struct hsi_controller *ssi)
 	}
 	/* Resetting GDD */
 	writel_relaxed(SSI_SWRESET, omap_ssi->gdd + SSI_GDD_GRST_REG);
-	/* Get FCK rate in KHz */
+	/* Get FCK rate in kHz */
 	omap_ssi->fck_rate = DIV_ROUND_CLOSEST(ssi_get_clk_rate(ssi), 1000);
-	dev_dbg(&ssi->device, "SSI fck rate %lu KHz\n", omap_ssi->fck_rate);
+	dev_dbg(&ssi->device, "SSI fck rate %lu kHz\n", omap_ssi->fck_rate);
 
 	writel_relaxed(SSI_CLK_AUTOGATING_ON, omap_ssi->sys + SSI_GDD_GCR_REG);
 	omap_ssi->gdd_gcr = SSI_CLK_AUTOGATING_ON;