Fix merge of a4e2b9adbba95c2d783761e84444bbb3c8d6107b.

The manual merge of a4e2b9ad that I did resulted in previous commits
(c7be281b and 20fcf9b) being undone.  Fix that up.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
diff --git a/src/acpi.c b/src/acpi.c
index 9071bd4..d39cbd9 100644
--- a/src/acpi.c
+++ b/src/acpi.c
@@ -294,8 +294,8 @@
     fadt->plvl2_lat = cpu_to_le16(0xfff); // C2 state not supported
     fadt->plvl3_lat = cpu_to_le16(0xfff); // C3 state not supported
     pci_init_device(fadt_init_tbl, pci, fadt);
-    /* WBINVD + PROC_C1 + SLP_BUTTON + FIX_RTC + USE_PLATFORM_CLOCK */
-    fadt->flags = cpu_to_le32((1 << 0) | (1 << 2) | (1 << 5) | (1 << 6) |
+    /* WBINVD + PROC_C1 + SLP_BUTTON + RTC_S4 + USE_PLATFORM_CLOCK */
+    fadt->flags = cpu_to_le32((1 << 0) | (1 << 2) | (1 << 5) | (1 << 7) |
                               (1 << 15));
 
     build_header((void*)fadt, FACP_SIGNATURE, sizeof(*fadt), 1);