platform: Add weak symbol for cdc clock
platform: Add weak symbol for cdc clock

CRs-Fixed: 501718
Change-Id: I534d2a4498594a2c812dccb4aa815d78cfc1f5aa

detule/lk-g2-spr,efidroid/lk,Foxda-Tech/argo8-bootable-bootloader-lk,M1cha/lktris,Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk,CanarySolutions/little-kernel,jsr-d10/android_bootable_bootloader_lk,M1cha/lktris,efidroid/lk,efidroid/lk,M1cha/android_bootable_bootloader_lk,jsr-d10/android_bootable_bootloader_lk,jsr-d10/android_bootable_bootloader_lk,Foxda-Tech/polaris-bootable-bootloader-lk,M1cha/lktris,Foxda-Tech/argo8-bootable-bootloader-lk,jsr-d10/android_bootable_bootloader_lk,M1cha/lktris,detule/lk-g2-spr,detule/lk-g2-spr,efidroid/lk,CanarySolutions/little-kernel,M1cha/lktris,Foxda-Tech/polaris-bootable-bootloader-lk,M1cha/android_bootable_bootloader_lk,CanarySolutions/little-kernel,Foxda-Tech/argo8-bootable-bootloader-lk,Foxda-Tech/argo8-bootable-bootloader-lk,CanarySolutions/little-kernel,M1cha/android_bootable_bootloader_lk,M1cha/android_bootable_bootloader_lk,Foxda-Tech/argo8-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk,detule/lk-g2-spr,CanarySolutions/little-kernel,M1cha/android_bootable_bootloader_lk,detule/lk-g2-spr,M1cha/android_bootable_bootloader_lk,efidroid/lk,jsr-d10/android_bootable_bootloader_lk