nb/intel/pineview: Extract HPET setup and delay function

To allow other platforms to reuse this code, extract it into a separate
compilation unit. Since HPET is enabled through the southbridge, place
the code in the southbridge scope. Finally, select the newly-added
Kconfig option from i82801gx and replace lpc.c `enable_hpet` function.

Change-Id: I7a28cc4d12c6d79cd8ec45dfc8100f15e6eac303
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49365
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/southbridge/intel/common/hpet.h b/src/southbridge/intel/common/hpet.h
new file mode 100644
index 0000000000..1a69178e2e
--- /dev/null
+++ b/src/southbridge/intel/common/hpet.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef SOUTHBRIDGE_INTEL_COMMON_HPET_H
+#define SOUTHBRIDGE_INTEL_COMMON_HPET_H
+
+#include <stdint.h>
+
+void enable_hpet(void);
+void hpet_udelay(u32 delay);
+
+#endif /* SOUTHBRIDGE_INTEL_COMMON_HPET_H */