Revert "acpi_table: Fix coverity defect in acpi_write_spcr"

This commit introduces a number of failure to build issues. For now,
revert it and we will wait for v2 to address the issue and the build
problems as well.

This reverts commit e1c3c720e780eed6647796d69dca6184640234a5.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/lib/acpi/acpi_table.c b/lib/acpi/acpi_table.c
index b9e1222..6473d95 100644
--- a/lib/acpi/acpi_table.c
+++ b/lib/acpi/acpi_table.c
@@ -420,7 +420,7 @@
 static int acpi_write_spcr(struct acpi_ctx *ctx, const struct acpi_writer *entry)
 {
 	struct serial_device_info serial_info = {0};
-	u64 serial_address, serial_offset;
+	ulong serial_address, serial_offset;
 	struct acpi_table_header *header;
 	struct acpi_spcr *spcr;
 	struct udevice *dev;
@@ -473,7 +473,7 @@
 	}
 
 	serial_width = serial_info.reg_width * 8;
-	serial_offset = ((u64)serial_info.reg_offset) << serial_info.reg_shift;
+	serial_offset = serial_info.reg_offset << serial_info.reg_shift;
 	serial_address = serial_info.addr + serial_offset;
 
 	/* Encode register access size */