[PATCH v5 0/3] Add eager FP and RISC-V vector context switching support

[dave.patel at riscstar.com]

Hi Anup,
        Thank you for taking out time and reviewing the patches.
I have added new patch to add Extension V, F and D and their checks before
context swtich

The changes include:
	- Alter sbi_vector.c to use csr_read and csr_write
	- Added another patch for Extension check.

I have covered all your comments, please can you have a look and let me know.

Thanks and Regards,
Dave

Signed-off-by: Dave Patel <dave.patel at riscstar.com>