x86: acpi: Add memset to initialize SPCR table

Add a missing memset to acpi_create_spcr().

The other acpi_create_xxxx() functions perform a memset on their
structures, acpi_create_spcr() does not and as a result the contents of
this table are partly uninitialized (and thus random after every reset).

Fixes: b288cd96 ("x86: acpi: Generate SPCR table")
Signed-off-by: NWolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>
[bmeng: fix the tags format in the commit message]
Signed-off-by: NBin Meng <bmeng.cn@gmail.com>

arch/x86/lib/acpi_table.c

@@ -252,6 +252,8 @@ static void acpi_create_spcr(struct acpi_spcr *spcr)
 	int space_id;
 	int ret = -ENODEV;
 
+	memset((void *)spcr, 0, sizeof(struct acpi_spcr));
+
 	/* Fill out header fields */
 	acpi_fill_header(header, "SPCR");
 	header->length = sizeof(struct acpi_spcr);