soc: qcom: ramdump: Remove page alignment during ramdump collection

Due to page alignment, memory size is exceeding and SMMU fault is
observed while collecting ramdumps for ADSP subsystem.

Change-Id: Ibadedcbac4eb83382d913e893722967e86775ea0
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>