Enable power button event generation.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

diff --git a/bios/rombios32.c b/bios/rombios32.c
index 81e3bad..9986531 100644
--- a/bios/rombios32.c
+++ b/bios/rombios32.c
@@ -1767,8 +1767,8 @@ void acpi_bios_init(void)
     fadt->plvl3_lat = cpu_to_le16(0xfff); // C3 state not supported
     fadt->gpe0_blk = cpu_to_le32(0xafe0);
     fadt->gpe0_blk_len = 4;
-    /* WBINVD + PROC_C1 + PWR_BUTTON + SLP_BUTTON + FIX_RTC */
-    fadt->flags = cpu_to_le32((1 << 0) | (1 << 2) | (1 << 4) | (1 << 5) | (1 << 6));
+    /* WBINVD + PROC_C1 + SLP_BUTTON + FIX_RTC */
+    fadt->flags = cpu_to_le32((1 << 0) | (1 << 2) | (1 << 5) | (1 << 6));
     acpi_build_table_header((struct acpi_table_header *)fadt, "FACP",
                             sizeof(*fadt), 1);