[ot] hw/opentitan: ot_otp: merge OTP implementation from EarlGrey and Darjeeling

- merge and adapt common code into OtOTPEngine
- keep only OTP top-specific implementation in ot_otp_eg.c and ot_otp_dj.c,
  which implement the OtOTPImplIf interface (specialization for Tops)
- regenerate OTP partition descriptions and key seed definition with otptool.py

Signed-off-by: Emmanuel Blot <eblot@rivosinc.com>

Author: rivos-eblot

hw/opentitan/Kconfig

@@ -124,12 +124,21 @@ config OT_OTP_BE_IF
     bool
 
 config OT_OTP_DJ
+    select OT_OTP_ENGINE
     select OT_OTP_IF
+    select OT_OTP_IMPL_IF
     select OT_PRESENT
     bool
 
 config OT_OTP_EG
+    select OT_OTP_ENGINE
     select OT_OTP_IF
+    select OT_OTP_IMPL_IF
+    select OT_PRESENT
+    bool
+
+config OT_OTP_ENGINE
+    select OT_OTP_IMPL_IF
     select OT_PRESENT
     bool
 

hw/opentitan/meson.build

@@ -37,6 +37,7 @@ system_ss.add(when: 'CONFIG_OT_OTBN', if_true: files('ot_otbn.c'))
 system_ss.add(when: 'CONFIG_OT_OTP_BE_IF', if_true: files('ot_otp_be_if.c'))
 system_ss.add(when: 'CONFIG_OT_OTP_DJ', if_true: files('ot_otp_dj.c'))
 system_ss.add(when: 'CONFIG_OT_OTP_EG', if_true: files('ot_otp_eg.c'))
+system_ss.add(when: 'CONFIG_OT_OTP_ENGINE', if_true: files('ot_otp_engine.c'))
 system_ss.add(when: 'CONFIG_OT_OTP_IF', if_true: files('ot_otp_if.c'))
 system_ss.add(when: 'CONFIG_OT_OTP_IMPL_IF', if_true: files('ot_otp_impl_if.c'))
 system_ss.add(when: 'CONFIG_OT_OTP_OT_BE', if_true: files('ot_otp_ot_be.c'))