Align linker files for all targets having multiple RAM banks

[deepikabhavnani]

Description

Targets having multiple RAM banks were not utilizing both RAM memories for all three toolchains.
Reference PR is added for all tool chains to 2 targets, which should be extended to rest of the devices.

Reference :
ARM - #10018
GCC - #9944
IAR - #10303

Issue request type

[ ] Question
[X] Enhancement
[ ] Bug

[deepikabhavnani]

CC @jeromecoutant

[ciarmcom]

Internal Jira reference: https://jira.arm.com/browse/MBOCUSTRIA-1137

[jeromecoutant]

please reopen this issue!

[jeromecoutant]

IAR update reference PR is no more #10003 but #10303

[deepikabhavnani]

@ARMmbed/mbed-os-maintainers - Can we change the settings to allow the issue owner to open/close the issue?

@linlingao - Please re-open this one

[linlingao]

@deepikabhavnani Can you confirm this applies to not just ST but also other targets?

[deepikabhavnani]

Can you confirm this applies to not just ST but also other targets?

Applies to all targets having multiple RAM banks