Capsule updates depend on SYSRESET, which we currently don't select but
instead use a custom reset_cpu() implementation which just calls
psci_reset().

Clean this up, drop our custom function and require PSCI reset.

There are some Qualcomm platforms that either can or do run without PSCI
support, but we didn't handle these properly before anyway.

Reviewed-by: Neil Armstrong <neil.armstr...@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodi...@linaro.org>
Signed-off-by: Caleb Connolly <caleb.conno...@linaro.org>
---
 arch/arm/Kconfig                 | 2 ++
 arch/arm/mach-snapdragon/board.c | 5 -----
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 39ad03acd2e4..0d5161358e33 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1084,8 +1084,10 @@ config ARCH_SNAPDRAGON
        select OF_CONTROL
        select OF_SEPARATE
        select SMEM
        select SPMI
+       select SYSRESET
+       select SYSRESET_PSCI
        select BOARD_LATE_INIT
        select OF_BOARD
        select SAVE_PREV_BL_FDT_ADDR
        select LINUX_KERNEL_IMAGE_HEADER if !ENABLE_ARM_SOC_BOOT0_HOOK
diff --git a/arch/arm/mach-snapdragon/board.c b/arch/arm/mach-snapdragon/board.c
index c4a3394706e6..b0d9a65bb8f5 100644
--- a/arch/arm/mach-snapdragon/board.c
+++ b/arch/arm/mach-snapdragon/board.c
@@ -106,13 +106,8 @@ void *board_fdt_blob_setup(int *err)
 
        return (void *)fdt;
 }
 
-void reset_cpu(void)
-{
-       psci_system_reset();
-}
-
 /*
  * Some Qualcomm boards require GPIO configuration when switching USB modes.
  * Support setting this configuration via pinctrl state.
  */

-- 
2.45.0

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