dm: pch: Rename get_sbase op to get_spi_base

Spell out 'sbase' to 'spi_base' so that it looks clearer.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/ivybridge/bd82x6x.c b/arch/x86/cpu/ivybridge/bd82x6x.c
index 16796de..66a8414 100644
--- a/arch/x86/cpu/ivybridge/bd82x6x.c
+++ b/arch/x86/cpu/ivybridge/bd82x6x.c
@@ -170,7 +170,7 @@
 	return 0;
 }
 
-static int bd82x6x_pch_get_sbase(struct udevice *dev, ulong *sbasep)
+static int bd82x6x_pch_get_spi_base(struct udevice *dev, ulong *sbasep)
 {
 	u32 rcba;
 
@@ -201,7 +201,7 @@
 }
 
 static const struct pch_ops bd82x6x_pch_ops = {
-	.get_sbase	= bd82x6x_pch_get_sbase,
+	.get_spi_base	= bd82x6x_pch_get_spi_base,
 	.set_spi_protect = bd82x6x_set_spi_protect,
 };