rv1126: spl: update version to v1.08

Build from next-dev:
	c6ee75e: rockchip: rk3308: fixup opp table for rk3308bs

Build command:
	./make.sh rv1126

Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>
Change-Id: I26589cec4a2ab33bc916e99ccfb5fb91785bc9b9

RKBOOT/RV1126MINIALL.ini

@@ -15,6 +15,6 @@ NUM=2
 LOADER1=FlashData
 LOADER2=FlashBoot
 FlashData=bin/rv11/rv1126_ddr_924MHz_v1.08.bin
-FlashBoot=bin/rv11/rv1126_spl_v1.07.bin
+FlashBoot=bin/rv11/rv1126_spl_v1.08.bin
 [OUTPUT]
-PATH=rv1126_spl_loader_v1.08.107.bin
+PATH=rv1126_spl_loader_v1.08.108.bin