MAINTAINERS: Add myself to the list of UFS maintainers

MAINTAINERS: Add myself to the list of UFS maintainers

Adding myself to continue Bhupesh's work to enhance and fix UFS
support in U-Boot, especially for Qualcomm SoCs, and help review
patches and maintain the UFS subsystem.

Reviewed-by: Neha Malcom Francis <n-francis@ti.com>
Tested-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Tested-by: Julius Lehmann <lehmanju@devpi.de>
Link: https://lore.kernel.org/r/20240930-topic-ufs-enhancements-v3-13-58234f84ab89@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>