soc: qcom: Kconfig: make RPMH match Command DB setting

RPMH and drivers that use RPMH APIs need Command DB API to find the
dynamic resource information. Let's match the RPMH to match the Command
DB configuration.

This should fix undefined symbol references reported by CI :

   aarch64-linux-ld: drivers/clk/qcom/clk-rpmh.o: in function `clk_rpmh_probe':
>> clk-rpmh.c:(.text+0xac): undefined reference to `cmd_db_read_addr'
>> aarch64-linux-ld: clk-rpmh.c:(.text+0xc0): undefined reference to `cmd_db_read_aux_data'
   aarch64-linux-ld: drivers/soc/qcom/rpmh-rsc.o: in function `rpmh_rsc_probe':
>> rpmh-rsc.c:(.text+0x42c): undefined reference to `cmd_db_ready'
   aarch64-linux-ld: drivers/regulator/qcom-rpmh-regulator.o: in function `rpmh_regulator_probe':
>> qcom-rpmh-regulator.c:(.text+0x3e0): undefined reference to `cmd_db_read_addr'

Cc: Todd Kjos <tkjos@google.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Maulik Shah <mkshah@codeaurora.org>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Lina Iyer <ilina@codeaurora.org>
Link: https://lore.kernel.org/r/20201008040907.7036-1-ilina@codeaurora.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/soc/qcom/Kconfig

@@ -110,6 +110,7 @@ config QCOM_RMTFS_MEM
 config QCOM_RPMH
 	tristate "Qualcomm RPM-Hardened (RPMH) Communication"
 	depends on ARCH_QCOM || COMPILE_TEST
+	depends on (QCOM_COMMAND_DB || !QCOM_COMMAND_DB)
 	help
 	  Support for communication with the hardened-RPM blocks in
 	  Qualcomm Technologies Inc (QTI) SoCs. RPMH communication uses an