rk3308: aarch64/32 bl31: update version to v2.24

Build from ATF commit:
    d5a5a89b7 plat: rk3308: use min voltage 0.843v for rk3308bs vdd_core
update feature:
    d5a5a89b7 plat: rk3308: use min voltage 0.843v for rk3308bs vdd_core
    42cb5315d plat: rk3308: only support standby wfi for cpu suspend
    305418b09 lib: psci: Add weak psci_plat_cpu_suspend_prepare()
    2f4c436b3 plat: rk3308: dram: ddr_get_rate() supports RK3308B-S

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Change-Id: Ide88499d5e9840e1265fe1092f5d65d002ec51ea

RKTRUST/RK3308AARCH32TRUST.ini

@@ -5,7 +5,7 @@ MINOR=0
 SEC=0
 [BL31_OPTION]
 SEC=1
-PATH=bin/rk33/rk3308_bl31_aarch32_v2.23.elf
+PATH=bin/rk33/rk3308_bl31_aarch32_v2.24.elf
 ADDR=0x00010000
 [BL32_OPTION]
 SEC=0

RKTRUST/RK3308TRUST.ini

@@ -5,7 +5,7 @@ MINOR=0
 SEC=0
 [BL31_OPTION]
 SEC=1
-PATH=bin/rk33/rk3308_bl31_v2.23.elf
+PATH=bin/rk33/rk3308_bl31_v2.24.elf
 ADDR=0x00010000
 [BL32_OPTION]
 SEC=0