xen/pciback: Cleanup the driver based on checkpatch warnings and errors.

Checkpatch found some extra warnings and errors. This mega
patch fixes them all in one big swoop. We also spruce
up the pcistub_ids to use DEFINE_PCI_DEVICE_TABLE macro
(suggested by Jan Beulich).

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

drivers/xen/xen-pciback/conf_space_header.c

@@ -249,27 +249,27 @@ static const struct config_field header_common[] = {
 	{}
 };
 
-#define CFG_FIELD_BAR(reg_offset) 			\
-	{ 						\
-	 .offset     = reg_offset, 			\
-	 .size       = 4, 				\
-	 .init       = bar_init, 			\
-	 .reset      = bar_reset, 			\
-	 .release    = bar_release, 			\
-	 .u.dw.read  = bar_read, 			\
-	 .u.dw.write = bar_write, 			\
-	 }
+#define CFG_FIELD_BAR(reg_offset)			\
+	{						\
+	.offset     = reg_offset,			\
+	.size       = 4,				\
+	.init       = bar_init,				\
+	.reset      = bar_reset,			\
+	.release    = bar_release,			\
+	.u.dw.read  = bar_read,				\
+	.u.dw.write = bar_write,			\
+	}
 
-#define CFG_FIELD_ROM(reg_offset) 			\
-	{ 						\
-	 .offset     = reg_offset, 			\
-	 .size       = 4, 				\
-	 .init       = rom_init, 			\
-	 .reset      = bar_reset, 			\
-	 .release    = bar_release, 			\
-	 .u.dw.read  = bar_read, 			\
-	 .u.dw.write = rom_write, 			\
-	 }
+#define CFG_FIELD_ROM(reg_offset)			\
+	{						\
+	.offset     = reg_offset,			\
+	.size       = 4,				\
+	.init       = rom_init,				\
+	.reset      = bar_reset,			\
+	.release    = bar_release,			\
+	.u.dw.read  = bar_read,				\
+	.u.dw.write = rom_write,			\
+	}
 
 static const struct config_field header_0[] = {
 	CFG_FIELD_BAR(PCI_BASE_ADDRESS_0),